Property, Plant and Equipment [Abstract] Schedule of components of premises and equipment Property, Plant and Equipment [Table Text Block] Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Bank Time Deposits Bank Time Deposits [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value of Financial Instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Investments held to maturity Debt Securities, Held-to-maturity, Fair Value Investment securities available-for-sale Debt Securities, Available-for-sale Loans held for sale Loans Held-for-sale, Fair Value Disclosure Loans held for investment, net Loans Receivable, Fair Value Disclosure Derivative asset Derivative Asset Accrued interest receivable Interest Receivable Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposit accounts Deposits, Fair Value Disclosure FHLB advances Advances from Federal Home Loan Banks Other borrowings Other Borrowings Fair Value Disclosure Amount of other borrowings not otherwise specified in the taxonomy, measured at fair value. Subordinated debentures Subordinated Debt Obligations, Fair Value Disclosure Derivative liability Derivative Liability Accrued interest payable Interest Payable Deposits [Abstract] Balance Time Deposits, Fiscal Year Maturity [Abstract] Within 3 months Time Deposit Maturities Within Three Months Represents the amount of time deposits maturing within three months following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. 4 to 6 months Time Deposit Maturities Four to Six Months Represents the amount of time deposits maturing from four to six months following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. 7 to 12 months Time Deposit Maturities Seven to Twelve Months Amount of time deposits maturing from seven to twelve months following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. 13 to 24 months Time Deposit Maturities, Year Two 25 to 36 months Time Deposit Maturities, Year Three 37 to 60 months Time Deposit Maturities Years Four and Five Represents the amount of time deposits maturing in the fourth and fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. Over 60 months Time Deposit Maturities, after Year Five Total certificates of deposit accounts Time Deposits Weighted Average Interest Rate Weighted Average Rate of Time Deposits [Abstract] Within 3 months (as a percent) Time Deposits Weighted Average Interest Rate Maturities Within Three Months Represents the weighted average interest rate for time deposits held by the entity with maturities within three months. 4 to 6 months (as a percent) Time Deposits Weighted Average Interest Rate Maturities Four to Six Months Represents the weighted average interest rate for time deposits held by the entity with maturities from four to six months. 7 to 12 months (as a percent) Time Deposits Weighted Average Interest Rate Maturities Seven to Twelve Months Represents the weighted average interest rate for time deposits held by the entity with maturities from seven to twelve months. 13 to 24 months (as a percent) Time Deposits, Weighted Average Interest Rate, Maturities Year Two 25 to 36 months (as a percent) Time Deposits, Weighted Average Interest Rate, Maturities Year Three 37 to 60 months (as a percent) Time Deposits Weighted Average Interest Rate Maturities Years Four and Five Represents the weighted average interest rate for time deposits held by the entity with maturities greater than three years but less than five years. Over 60 months (as a percent) Time Deposits, Weighted Average Interest Rate, Maturities Greater than Five Years Total certificates of deposit accounts (as a percent) Time Deposits Weighted Average Interest Rate Represents the weighted average interest rate for time deposits. Retirement Benefits [Abstract] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] SERP Supplemental Employee Retirement Plan [Member] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis] Type of Deferred Compensation, All Types [Domain] (Deprecated 2014-01-31) Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] Deferred compensation plan Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Plaza Bancorp Plaza Bancorp [Member] Plaza Bancorp [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Executive Officer Executive Officer [Member] Benefit Plans Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Deferred compensation liability Deferred Compensation Liability, Current and Noncurrent Amounts expensed Deferred Compensation Arrangement with Individual, Compensation Expense Amounts recorded as liability Deferred Compensation Arrangement with Individual, Recorded Liability Banking and Thrift [Abstract] Regulatory Capital Requirements and Other Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Income Tax Disclosure [Abstract] Schedule of components of income taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of reconciliation from statutory federal income taxes to the Company's effective income taxes Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of deferred tax assets (liabilities) comprised of the temporary differences between the financial statement carrying amounts and the tax basis of assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reconciliation of unrecognized tax benefits Summary of Income Tax Contingencies [Table Text Block] Receivables [Abstract] Schedule of components of loans held for investment Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Summary of Company's investment in purchased credit impaired loans Purchased Credit, Impaired Loans [Table Text Block] Tabular disclosure of the carrying amount of purchased credit impaired loans by loan classes. Summary of accretable yield on purchased credit impaired Schedule of Changes in Accretable Yield for Purchased Credit, Impaired Loans [Table Text Block] Tabular disclosure of changes in the accretable yield for purchased credit-impaired loans. On the acquisition date, the amount by which the undiscounted expected cash flows of the purchased credit impaired loans exceed the estimated fair value of the loan is the accretable yield. The accretable yield is measured at each financial reporting date and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the purchased credit impaired loan. Summary of Company's investment in impaired loans Impaired Financing Receivables [Table Text Block] Summary of loan portfolio by the Company's internal risk grading system Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of credit quality of the loan portfolio Past Due Financing Receivables [Table Text Block] Quarterly Financial Information Disclosure [Abstract] Interest income Interest and Dividend Income, Operating Interest expense Interest Expense Provision for credit losses Provision for Loan and Lease Losses Noninterest income Noninterest Income Noninterest expense Noninterest Expense Income tax provision Income Tax Expense (Benefit) Net income Net Income (Loss) Available to Common Stockholders, Basic Earnings per share: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Grandpoint Capital, Inc. Grandpoint Capital, Inc. [Member] Grandpoint Capital, Inc. [Member] Heritage Oaks Bank Heritage Oaks Bancorp [Member] Heritage Oaks Bancorp [Member] Security California Bancorp Security California Bancorp [Member] Security California Bancorp [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Acquired Loans Acquired Loans [Member] Represents information pertaining to acquired loans. Business Acquisition [Line Items] Business Acquisition [Line Items] Contractual amounts due Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition Cash flows not expected to be collected Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Cash Flows Not Expected to be Collected at Acquisition Represents the investor's estimate, at acquisition, of the amount and timing of undiscounted principal, interest, and other cash flows not expected to be collected. Expected cash flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition Interest component of expected cash flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Interest Component of Cash Flows Expected to be Collected at Acquisition Represents the investor's estimate, at acquisition, of the amount and timing of interest on cash flows expected to be collected. Fair value of acquired loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value Earnings Per Share Earnings Per Share [Text Block] Reconciliation from statutory federal income taxes to the company's effective income taxes Effective Income Tax Rate Reconciliation, Amount [Abstract] Statutory federal income tax provision Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State taxes, net of federal income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Cash surrender life insurance Effective Income Tax Rate Reconciliation, Cash Surrender Life Insurance Effective Income Tax Rate Reconciliation, Cash Surrender Life Insurance Tax exempt interest Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Merger costs Effective Income Tax Rate Reconciliation, Acquisition of Business, Amount Effective Income Tax Rate Reconciliation, Acquisition of Business, Amount LIHTC investments Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount Effect of the Tax Act Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Amount Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Amount Excess tax benefit of stock-based compensation Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount Prior year true-up Effective Income Tax Rate Reconciliation, Prior Year True-Up, Amount Effective Income Tax Rate Reconciliation, Prior Year True-Up, Amount Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Total income tax provision Quarterly Results of Operations (Unaudited) Quarterly Financial Information [Text Block] Provision for Loan and Lease Losses [Abstract] Allowance for Loan Losses Allowance for Credit Losses [Text Block] Condensed Financial Information Disclosure [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Corporation Parent Company [Member] Parent Company Financial Information Condensed Financial Statements, Captions [Line Items] Schedule of condensed balance sheets Condensed Balance Sheet [Table Text Block] Schedule of condensed statements of operations Condensed Income Statement [Table Text Block] Schedule of condensed statements of cash flows Condensed Cash Flow Statement [Table Text Block] Statement of Financial Position [Abstract] Estimated Fair Value Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Debt Disclosure [Abstract] Schedule of summarizes activities for our subordinated debentures Schedule of Subordinated Borrowing [Table Text Block] Schedule of components of deposit accounts and weighted average interest rates Schedule of Deposits [Table Text Block] Tabular disclosure of components of different types of deposit liabilities held by the entity. Schedule of aggregate annual maturities of certificates of deposit accounts Schedule of Time Deposit Contractual Maturities [Table Text Block] Tabular disclosure of time deposits classified with respect to their maturities. Schedule of interest expense on deposit accounts Schedule of Interest Expense Deposits [Table Text Block] Tabular disclosure of interest expense on deposits. Interest expense on deposit accounts Interest Expense on Deposit Liabilities, Disclosures [Abstract] Checking accounts Interest Expense, Demand Deposit Accounts Money market accounts Interest Expense, Savings Deposits Savings Interest Expense, Money Market Deposits Certificates of deposit accounts Interest Expense, Time Deposits Total Interest Expense, Deposits Accrued interest on deposits Deposit Liabilities, Accrued Interest Revenue from Contract with Customer [Abstract] Revenue Recognition Revenue from Contract with Customer [Text Block] Specifically evaluated impaired loans Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment With Specific Allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Components of deferred tax assets (liabilities) Components of Deferred Tax Assets and Liabilities [Abstract] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Net operating loss Deferred Tax Assets, Operating Loss Carryforwards Allowance for loan losses, net of bad debt charge-offs Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Deferred compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation State taxes Deferred Tax Assets, State Taxes Depreciation Deferred Tax Assets, Property, Plant and Equipment Loan discount Deferred Tax Assets, Loan Discount Deferred Tax Assets, Loan Discount Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Unrealized loss on available for sale securities Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Capital loss carryover Deferred Tax Assets, Capital Loss Carryforwards AMT credit Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Deferred FDIC gain Deferred Tax Liabilities, Tax Deferred Income Core deposit intangibles Deferred Tax Liabilities, Intangible Assets Loan origination costs Deferred Tax Liabilities, Loan Origination Costs Deferred Tax Liabilities, Loan Origination Costs Depreciation Deferred Tax Liabilities, Property, Plant and Equipment Unrealized gain on available for sale securities Deferred Tax Liabilities, Unrealized Losses on Available-for-Sale Securities, Gross Deferred Tax Liabilities, Unrealized Losses on Available-for-Sale Securities, Gross Other Deferred Tax Liabilities, Other Total deferred tax liabilities Deferred Tax Liabilities, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Net deferred tax asset Deferred Tax Assets, Net Commitments and Contingencies Disclosure [Abstract] Commitments [Table] Commitments [Table] Information related to commitments of the entity. CEO Chief Executive Officer [Member] Chief Banking Officer Chief Banking Officer [Member] Represents information pertaining to the Chief Banking Officer. Chief Financial Officer Chief Financial Officer [Member] Chief Credit Officer Chief Credit Officer [Member] Represents information pertaining to the Chief Credit Officer. Type of Arrangement and Non-arrangement Transactions [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Arrangements and Non-arrangement Transactions [Domain] Arrangements and Non-arrangement Transactions [Domain] Employment Agreements Employment Contracts [Member] Employment Agreements Commitments [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Rental expense Operating Leases, Rent Expense Term of agreements (in years) Term of Agreements Represents the term of agreements entered into by the entity. Income Taxes Income Tax Disclosure [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Executive Officers And Directors Executive Officers And Directors [Member] Executive Officers And Directors [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Associa Associa [Member] Associa [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Loan receivable Loans and Leases Receivable, Related Parties Related party deposits Related Party Deposit Liabilities Statement of Comprehensive Income [Abstract] Net Income Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized holding gains/(losses) on securities arising during the period, net of income tax (benefits) Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for net gain on sale of securities included in net income, net of income taxes Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Investments, All Other Investments [Abstract] Bank Owned Life Insurance Life Insurance, Corporate or Bank Owned [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Subordinated Notes Due 2024 Subordinated Notes5.75 Percent Due2024 [Member] Represents information pertaining to 5.75% Subordinated Notes Due 2024. Subordinated Debentures Subordinated Debt [Member] Subordinated Notes 7.125% Subordinated Notes 7.125%, Due 2025 [Member] Subordinated Notes 7.125%, Due 2025 [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] PPBI Trust I P P B I Trust I [Member] Represents information pertaining to PPBI Trust I, a statutory trust created under the laws of the State of Delaware. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Mission Community Capital Trust I Mission Community Capital Trust I [Member] Mission Community Capital Trust I [Member] Santa Lucia Bancorp (CA) Capital Trust Santa Lucia Bancorp (CA) Capital Trust [Member] Santa Lucia Bancorp (CA) Capital Trust [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt issued Debt Instrument, Face Amount Fixed interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Subordinated debentures Subordinated Debt Unamortized debt issuance costs Debt Issuance Costs, Gross Contribution of net proceeds from the Private Placement to the Bank to support general corporate purposes Contribution To Support General Corporate Purposes Represents the amount of contribution to support general corporate purposes. Floating interest rate, basis points added to base rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Effective rate (as a percent) Debt Instrument, Interest Rate, Effective Percentage Minority interest purchased (as a percent) Ownership Interest Purchased Percentage Represents the minority interest percentage purchased during the period. Amount of minority interest purchased Ownership Interest Purchased Represents the value of minority interest purchased during the period. Floating Rate Trust Preferred Securities issue amount Payments to Acquire Trust Preferred Investments Purchase accounting fair value adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities Number of subordinated notes assumed Number of Subordinated Notes Assumed Number of Subordinated Notes Assumed Debt assumed in acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Redemption price (as a percent) Debt Instrument, Redemption Price, Percentage Carrying value of subordinated notes Junior Subordinated Notes Redemption price, subsequent reduction (as a percent) Debt Instrument, Redemption Price, Subsequent Reduction, Percentage Debt Instrument, Redemption Price, Subsequent Reduction, Percentage Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill Goodwill acquired during the year Goodwill, Acquired During Period Impairment losses Goodwill, Impairment Loss Net CDI Finite-Lived Intangible Assets, Net Additions due to acquisitions Finite-lived Intangible Assets Acquired Estimated aggregate amortization expense Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Premises Building [Member] Leasehold improvements Leasehold Improvements [Member] Furniture, fixtures and equipment Furniture Fixtures And Equipment [Member] Furniture and fixture represents equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Equipment represents tangible personal property used to produce goods and services. Automobiles Automobiles [Member] Premises and Equipment Property, Plant and Equipment [Line Items] Subtotal Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total Property, Plant and Equipment, Net Depreciation expense for premises and equipment Depreciation Gross amount of CDI: Finite-Lived Intangible Assets, Gross [Abstract] Balance, beginning of year Finite-Lived Intangible Assets, Gross Balance, end of year Accumulated amortization: Finite LIved Intangible Assets, Accumulated Amortization [Abstract] Finite LIved Intangible Assets, Accumulated Amortization [Abstract] Balance, beginning of year Finite-Lived Intangible Assets, Accumulated Amortization Amortization Amortization of Intangible Assets Balance, end of year Net CDI, end of year Equity Method Investments and Joint Ventures [Abstract] Investment in LIHTC Projects Schedule of Cost Method Investments [Table Text Block] Investments, Debt and Equity Securities [Abstract] FHLB stock Federal Home Loan Bank Stock Federal Reserve Bank Stock Federal Reserve Bank Stock Other stock Stock Other than Federal Home Loan Bank and Federal Reserve Bank Stock Represents the amount of stock other than Federal Home Loan Bank stock and Federal Reserve Bank stock. FHLB repurchases Excess Federal Home Loan Bank Stock with Entity Repurchased by Federal Home Loan Bank Represents the amount of excess FHLB stock repurchased by FHLB through the stock repurchase program. Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock Common Stock [Member] Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Gross loans acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable, Gross The amount of acquisition cost of a business combination allocated to loans. Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits The amount of acquisition cost of a business combination allocated to deposits assumed from the acquired entity. Equity issued (shares) Business Acquisition, Equity Interests Issued or Issuable Number of Shares Issued Ratio Business Acquisition, Equity Interests Issued or Issuable Number of Shares Issued Ratio Consideration paid Business Combination, Consideration Transferred Aggregate cash paid for shares and consideration payable Business Acquisition, Aggregate Cash For Fractional Shares and Consideration Payable Business Acquisition, Aggregate Cash For Fractional Shares and Consideration Payable Number of shares of common stock issued as consideration Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Closing stock price of common stock (in dollars per share) Business Acquisition, Equity Interest Issued or Issuable, Price Per Share Business Acquisition, Equity Interest Issued or Issuable, Price Per Share Value of shares of common stock to be issued Business Acquisition, Equity Interest Issued or Issuable, Value Assigned Schedule of Company's unaudited earnings per share calculations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Goodwill and Core Deposit Intangibles Goodwill and Intangible Assets Disclosure [Text Block] Investment Holdings [Table] Investment Holdings [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. Treasury US Treasury Securities [Member] Agency Agency Securities [Member] Corporate debt Corporate Debt Securities [Member] Municipal bonds Municipal Bonds [Member] Collateralized mortgage obligation: residential Collateralized Mortgage Obligations [Member] Mortgage-backed securities: residential Collateralized Mortgage Backed Securities [Member] Other Other Debt Obligations [Member] Home Owners Association Loans Home Owners Association Loans [Member] Represents information pertaining to Home Owners' Association (HOA) Banking and Lending unit. Investment Securities Investment Holdings [Line Items] Investment securities available-for-sale: Debt Securities, Available-for-sale [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Unrealized Gain Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Unrealized Loss Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Investment securities held-to-maturity: Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Amortized Cost Debt Securities, Held-to-maturity Unrealized Gain Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Unrealized Loss Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Total investment securities Investments [Abstract] Amortized Cost Debt Securities, Available-for-sale and Held-to-maturity Unrealized Gain Available-for-sale Securities And Held-To-Maturity Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities And Held-To-Maturity Securities, Accumulated Gross Unrealized Gain, before Tax Unrealized Loss Available-for-sale Securities And Held-To-Maturity Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities And Held-To-Maturity Securities, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Debt Securities, Available-for-sale and Held-to-maturity, Fair Value Disclosure Debt Securities, Available-for-sale and Held-to-maturity, Fair Value Disclosure Additional disclosures Available For Sale Securities Additional Disclosures [Abstract] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss) before Tax Amount Represents the amount of accumulated change in equity from transactions and other events and circumstances from non-owner sources, before tax effect, at period end. Accumulated other comprehensive income (loss), net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Estimated par value of securities pledged as collateral for the Bank's inverse putable reverse repurchases Available For Sale Securities Pledged as Collateral Estimated Par Value Represents the estimated par value of available-for-sale securities that serve as collateral for borrowings. Fair value of securities pledged as collateral for the Bank's inverse putable reverse repurchases Available For Sale Securities Pledged as Collateral Fair Value Represents the fair value of available-for-sale securities that serve as collateral for borrowings. Value of inverse putable reverse repurchases secured by collateral Securities Sold under Agreements to Repurchase Average balance of repurchase agreement facilities Securities Sold under Agreements to Repurchase, Average Balance Securities Sold under Agreements to Repurchase, Average Balance OTTI realized Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Gross gains Available-for-sale Securities, Gross Realized Gains Gross losses Available-for-sale Securities, Gross Realized Losses Net proceeds from the sale of available-for-sale securities Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Document and Entity Information Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Net Cash Provided by (Used in) Operating Activities [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Share-based compensation expense Share-based Compensation Equity in undistributed earnings of subsidiaries and dividends from the bank Income (Loss) from Subsidiaries Represents the income from subsidiaries recognized during the period. Increase (decrease) in accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities (Decrease) increase in current and deferred taxes Increase (Decrease) in Current and Deferred Taxes Represents the increase (decrease) during the reporting period in the amounts of current and deferred taxes. Decrease (increase) in other assets Increase (Decrease) in Other Operating Assets Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of common stock, net of issuance cost Proceeds from Issuance of Common Stock Restricted stock surrendered and canceled Payments for Repurchase of Common Stock Proceeds from exercise of options and warrants Proceeds from Stock Options Exercised Capital contribution to Bank Payments for Capital Contribution The cash outflow for capital contribution made during the period. Proceeds from issuance of subordinated debentures Proceeds from Issuance of Subordinated Long-term Debt Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of year Cash, Cash Equivalents, and Federal Funds Sold Cash and cash equivalents, end of year Derivative [Table] Derivative [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swap contracts Interest Rate Swap [Member] Derivative [Line Items] Derivative [Line Items] Notional Derivative Asset, Notional Amount Derivative assets, fair value Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative liabilities, fair value Derivative Liability, Fair Value, Amount Not Offset Against Collateral Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Events Subsequent Event [Line Items] Cash dividend declared (usd per share) Common Stock, Dividends, Per Share, Declared Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Service charges on deposit accounts Deposit Account [Member] Other service fee income Financial Service, Other [Member] Debit card interchange fee income Debit Card [Member] Statement [Line Items] Statement [Line Items] INTEREST INCOME Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Investment securities and other interest-earning assets Interest and Dividend Income Securities and Other Interest and dividend income on all securities plus interest earned on other assets not otherwise specified in the taxonomy. Total interest income INTEREST EXPENSE Interest Expense [Abstract] Deposits FHLB advances and other borrowings Interest Expense Federal Home Loan Bank Advances and Other Borrowings Interest expense incurred during the reporting period on borrowings associated with Federal Home Loan Bank advances and other borrowings not otherwise specified in the taxonomy. Subordinated debentures Interest Expense, Subordinated Notes and Debentures Total interest expense Net interest income before provision for credit losses Interest Income (Expense), Net Provision for credit losses Provision for Loan Losses Expensed Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss NONINTEREST INCOME Noninterest Income [Abstract] Loan servicing fees Loan Servicing Fees Loan Servicing Fees Noninterest income Revenue from Contract with Customer, Excluding Assessed Tax Earnings on bank-owned life insurance Bank Owned Life Insurance Income Net gain from sales of loans Gain (Loss) on Sales of Loans, Net Net gain from sales of investment securities Debt and Equity Securities, Gain (Loss) Other income Noninterest Income, Other Operating Income Total noninterest income NONINTEREST EXPENSE Noninterest Expense [Abstract] Compensation and benefits Labor and Related Expense Premises and occupancy Occupancy, Net Data processing Communications and Information Technology Other real estate owned operations, net Other Real Estate Owned Operations Net This element represents the fair value losses recognized as a result of valuations performed subsequent to foreclosure. FDIC insurance premiums Federal Deposit Insurance Corporation Premium Expense Legal, audit and professional expense Professional Fees Marketing expense Marketing Expense Office, telecommunications and postage expense Supplies and Postage Expense Loan expense Debt Related Commitment Fees and Debt Issuance Costs Deposit expense Deposit Expense Represents the amount of expenses incurred by the entity relating to deposits made by it. Merger-related expense Business Combination, Integration Related Costs CDI amortization Other expense Other Noninterest Expense Total noninterest expense Net income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax EARNINGS PER SHARE WEIGHTED AVERAGE SHARES OUTSTANDING Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Current income tax provision: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Total current income tax provision Current Income Tax Expense (Benefit) Deferred income tax provision (benefit): Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) Effect of Tax Act Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Total deferred income tax provision (benefit) Deferred Income Tax Expense (Benefit), Net Deferred Income Tax Expense (Benefit), Net Accretable yield on purchased credit impaired Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance at the beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Additions Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Payoffs Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Disposals and Other The sale or transfer or other adjustments of a loan during the period resulting in a reduction in the excess of a loan's cash flows expected to be collected over the investor's initial investment. This relates to loans not accounted for as a debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Sales Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans Reclassification from nonaccretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Increase (Decrease) The increase (decrease) in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, due to the acquisition of similar loans not accounted for as debt securities during the period. Balance at the end of period Weighted average number of stock options excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income/(Loss) (numerator) Net Income (Loss) Attributable to Parent [Abstract] Net income applicable to earnings per share Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Basic earnings per share: Income available to common stockholders Diluted earnings per share: Income available to common stockholders Net Income (Loss) Available to Common Stockholders, Diluted Shares (denominator) Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic earnings per share: Income available to common stockholders (in shares) Effect of dilutive securities: Warrants and stock option plans (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted earnings per share: Income available to common stockholders (in shares) Per Share Amount Earnings Per Share, Basic and Diluted [Abstract] Basic earnings per share: Income available to common stockholders (in dollars per share) Diluted earnings per share: Income available to common stockholders (in dollars per share) Accounting Policies [Abstract] Description of Business Description of Business [Policy Text Block] Disclosure of accounting policy for the business description. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Principles of Consolidation Consolidation, Policy [Policy Text Block] Basis of Financial Statement Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Securities Investment, Policy [Policy Text Block] Securities Held-to-Maturity/Available-for-sale Marketable Securities, Policy [Policy Text Block] Impairment of Investments Impairment of Investments [Policy Text Block] Disclosure of accounting policy for impairment of investment. Federal Home Loan Bank Stock Federal Home Loan Bank Stock [Policy Text Block] Federal Home Loan Bank Stock [Policy Text Block] Federal Reserve Bank Stock Federal Reserve Bank Stock [Policy Text Block] Federal Reserve Bank Stock [Policy Text Block] Loans Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Loan Servicing Assets Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Loans Held for Investment Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Allowance for Loan Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Purchased Credit Impaired Loans Acquired Loans [Policy Text Block] Disclosure of accounting policy for acquired loans. Other Real Estate Owned Other Real Estate Owned [Policy Text Block] Disclosure of accounting policy for other real estate owned. Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Securities Sold Under Agreements to Repurchase Repurchase and Resale Agreements Policy [Policy Text Block] Bank Owned Life Insurance Bank Owned Life Insurance [Policy Text Block] Disclosure of accounting policy for bank owned life insurance. Goodwill and Core Deposit Intangible Goodwill and Intangible Assets, Policy [Policy Text Block] Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] Subordinated Debentures Debt, Policy [Policy Text Block] Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings per Share Earnings Per Share, Policy [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Employee contribution, as a percentage of compensation Defined Contribution Plan Employees Contribution Percentage of Compensation Represents the annual employee contributions to the plan as a percentage of compensation. Employer's match of employees' contributions of the first 3% of eligible compensation (as a percent) Defined Contribution Plan Employers Match Level One Represents the employer's matching contribution of the first level of employees' contributions. Percentage of eligible compensation, matched 100% by employer Defined Contribution Plan Employers Match for Employees Contribution Level One Represents the first level of employees' contributions (percentage of compensation), which are matched by the employer. Employer's match of employees' contributions of the next 2% of eligible compensation (as a percent) Defined Contribution Plan Employers Match Level Two Represents the employer's matching contribution of the second level of employees' contributions. Percentage of eligible compensation, matched 50% by employer Defined Contribution Plan Employers Match for Employees Contribution Level Two Represents the second level of employees' contributions (percentage of compensation), which are matched by the employer. Contributions made Defined Contribution Plan, Cost Risks and Uncertainties [Abstract] Financial Instruments with Off-Balance Sheet Risk Concentration Risk Disclosure [Text Block] Schedule of Company's and Bank's actual capital amounts and ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Offsetting [Abstract] Offsetting Assets and Liabilities Offsetting Assets and Liabilities [Table Text Block] Offsetting Assets and Liabilities [Table Text Block] Acquisitions Business Combination Disclosure [Text Block] Number of areas where the entity's credit quality is maintained and credit risk managed Financing Receivable, Credit Quality and Credit Risk Management, Area Number Represents the number of areas related to financing receivables where the entity's credit quality is maintained and credit risk managed. Number of Pass scale grades Financing Receivable, Credit Quality, Pass Grade Number Represents the number of subcategories established within pass grade to stratify risk associated with pass loans. Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Business Loans Commercial Portfolio Segment [Member] Real Estate Loans Commercial Real Estate Portfolio Segment [Member] Consumer Loans Consumer Portfolio Segment [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Class of Financing Receivable Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Commercial and industrial Commercial And Industrial Business Loan [Member] A loan, whether secured or unsecured, to a company for purposes such as seasonal working capital needs, inventory financing, equipment purchases, acquisitions and industrial needs. Franchise Franchise Business Loans [Member] Franchise Business Loans [Member] Commercial owner occupied Commercial Owner Occupied Business Loan [Member] Represents the business loans related to commercial property occupied by the owner. SBA Small Business Administration Loans [Member] Represents the information pertaining to business loans for which Small Business Administration (SBA) provides a government-backed guarantee. Warehouse Facilities Warehouse Facilities Business Loan [Member] Represents the information pertaining to business loans related to warehouse facilities. Agribusiness Agriculture Loans [Member] Agriculture Loans [Member] Commercial non-owner occupied Commercial Non Owner Occupied Real Estate Loan [Member] Represents the loans related to the commercial real estate not occupied by the owner. Multi-family Multi Family Real Estate Loan [Member] Represents the information pertaining to real estate loans in multi-family sector. One-to-four family One To Four Family Real Estate Loan [Member] Represents the information pertaining to real estate loans in one-to-four family sector. Construction Construction Loans [Member] Farmland Farmland Loans [Member] Farmland Loans [Member] Land Real Estate Land [Member] Represents the information pertaining to real estate loans in land sector. Consumer loans Other Loans Receivable [Member] Class of financing receivables related to other loans. Credit Risk Grades Financing Receivable, Recorded Investment [Line Items] Gross loans Loans and Leases Receivable, Gross Schedule of amortized cost and estimated fair value of securities Summary Investment Holdings [Table Text Block] Schedule of number, fair value and gross unrealized holding losses of the Company's investment securities by investment category and length of time that the securities have been in a continuous loss position Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of amortized cost and estimated fair value of investment securities available for sale by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Impaired Loans Financing Receivable, Impaired [Line Items] Recorded Investment Impaired Financing Receivable, Recorded Investment Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Without Specific Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Specific Allowance for Impaired Loans Impaired Financing Receivable, Related Allowance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Investment in TDR Financing Receivable, Modifications, Post-Modification Recorded Investment Nonaccruing loans Impaired Financing Receivable, Unpaid Principal Balance, Nonaccrual Status Amount of unpaid principal balance of impaired financing receivables that are on nonaccrual status as of the balance sheet date with related allowance for credit losses and without related allowance for credit losses. Loans 90 days or more past due and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Net interest and other income Business Acquisitions Pro Forma Net Interest and Other Income The pro forma net interest and other income for the period as if the business combination or combinations had been completed at the beginning of a period. Net income Business Acquisition, Pro Forma Net Income (Loss) Basic earnings per share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Diluted Long-term Federal Home Loan Bank Advances [Abstract] Summary of activities in advances from the FHLB Schedule of Federal Home Loan Bank Advances [Table Text Block] Tabular disclosure of advances from Federal Home Loan Bank. Summary of activities in other borrowings Schedule of Debt [Table Text Block] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Current Financing Receivables, 1 to 29 Days Past Due [Member] 30-59 Financing Receivables, 30 to 59 Days Past Due [Member] 60-89 Financing Receivables, 60 to 89 Days Past Due [Member] 90 Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Other information concerning the credit quality Financing Receivable, Recorded Investment, Past Due [Line Items] Current Financing Receivable, Recorded Investment, Current Days Past Due Financing Receivable, Recorded Investment, Past Due Total Gross Loans Non-accruing Financing Receivable, Recorded Investment, Nonaccrual Status Average balance outstanding Debt Average Outstanding Amount Represents the average borrowings during the period, for the form of debt having an initial term of one year or more than the normal operating cycle, if longer. Maximum amount outstanding at any month-end during the year Debt Maximum Month End Outstanding Amount Represents the maximum month-end borrowings during the period, for the form of debt having an initial term of one year or more than the normal operating cycle, if longer. Balance outstanding at end of year Other Borrowings Weighted average interest rate during the year Debt Instrument, Interest Rate During Period Schedule of carrying amount and estimated fair value of financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Off-balance sheet commitments and standby letters of credit Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Schedule of Company's assets measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Description of Business and Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Transaction accounts Transaction Accounts [Abstract] Noninterest-bearing checking Noninterest-bearing Deposit Liabilities Interest-bearing checking Interest-bearing Domestic Deposit, Checking Money market Deposits, Money Market Deposits Savings Deposits, Savings Deposits Total transaction accounts Transaction Accounts Represents the total amount of transaction account deposit liabilities. Certificates of deposit accounts Certificates of Deposit Accounts [Abstract] Certificates of Deposit Accounts [Abstract] 250,000 or less Time Deposits Less than Dollars 250000 The weighted average interest rate for time deposits in denominations of $250,000 or less. Greater than $250,000 Time Deposits Over Dollars 250000 Represents the aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of 250,000 dollars or more. Total deposits Deposits Transaction accounts Transaction Accounts Weighted Average Interest Rate [Abstract] Noninterest-bearing checking (as a percent) Noninterest Bearing Deposit Liabilities Weighted Average Interest Rate Represents the weighted average interest rate for noninterest-bearing checking deposit liabilities. Interest-bearing checking (as a percent) Interest Bearing Deposit Liabilities Weighted Average Interest Rate Represents the weighted average interest rate for interest-bearing checking deposit liabilities. Money market (as a percent) Deposits Money Market Deposits Weighted Average Interest Rate Represents the weighted average interest rate for money market deposit liabilities. Savings (as a percent) Deposits Savings Deposits Weighted Average Interest Rate Represents the weighted average interest rate for savings deposits. Total transaction accounts (as a percent) Transaction Accounts Weighted Average Interest Rate Represents the weighted average interest rate for all the transaction accounts. Certificates of deposit accounts Time Deposits Weighted Average Interest Rate Abstract Less than $100,000 (as a percent) Time Deposits Less than Dollars 250000 Weighted Average Interest Rate Represents the weighted average interest rate for time deposits in denominations of 250,000 dollars or less. Greater than $250,000 (as a percent) Time Deposits Over Dollars 250000 Weighted Average Interest Rate Represents the weighted average interest rate for time deposits in denominations of over 250,000 dollars. Total deposits (as a percent) Deposits Weighted Average Interest Rate Represents the weighted average interest rate for all deposits. Bank owned life insurance Bank Owned Life Insurance Income from bank owned life insurance, non-interest income Bank Owned Life Insurance Non-interest Income Bank Owned Life Insurance Non-interest Income Related Parties Related Party Transactions Disclosure [Text Block] Percentage of capital stock of the Bank held Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Number of depository branches Number of Depository Branches Represents the number of depository branches. Cash and Cash Equivalents Cash and Cash Equivalents [Abstract] Cash reserves required by the Board of Governors of the Federal Reserve for depository institutions (in dollars) Cash Reserve Deposit Required and Made Computer and telecommunication Computer And Telecommunication [Member] Represents information pertaining to the computer and telecommunication equipment. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core Deposits Core Deposits [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2018-02 Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accumulated Retained Earnings Retained Earnings [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Premises, furniture and equipment Estimated useful life (in years) Property, Plant and Equipment, Useful Life Weighted average useful life (in years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Valuation allowance Reclassification of certain tax effects of the Tax Cuts and Jobs Act Tax Cuts And Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Tax Effect Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act of 2017. Liability for future lease payments Operating Lease, Liability Right of use assets Operating Lease, Right-of-Use Asset Goodwill [Roll Forward] Goodwill [Roll Forward] Balance, beginning of year Purchase Accounting Adjustments Goodwill, Purchase Accounting Adjustments Impairment losses Balance, end of year Accumulated impairment losses at end of year Goodwill, Impaired, Accumulated Impairment Loss Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance at January 1 Unrecognized Tax Benefits Additions based on tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Balance at December 31 Subordinated Debentures Debt Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested at the beginning of the year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested at the end of the year (in shares) Weighted Average Grant-Date Fair Value per share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Unvested at the beginning of the year (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested at the end of the year (in dollars per share) Compensation expense Allocated Share-based Compensation Expense Grant date fair value Stock Granted, Value, Share-based Compensation, Net of Forfeitures Unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-average period of recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Federal Home Loan Bank Advances and Other Borrowings Federal Home Loan Bank Advances, Disclosure [Text Block] Tax effect on unrealized holding gains (losses) on securities arising during the period Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Income tax expense on reclassification adjustment for net gain on sale of securities included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax ASSETS ACQUIRED Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Investment securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Loans, gross Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Gross Loans Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Gross Loans Allowance for loan losses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Allowance for Loan Losses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Allowance for Loan Losses Fixed assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Deferred tax assets Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total assets acquired LIABILITIES ASSUMED Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Deferred tax liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Other Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Excess of assets acquired over liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Goodwill recognized Fair Value Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract] Cash and cash equivalents Business Combination, Provisional Accounting, Initial Accounting Incomplete, Adjustment, Cash and Equivalents Business Combination, Provisional Accounting, Initial Accounting Incomplete, Adjustment, Cash and Equivalents Investment securities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets, Marketable Securities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets, Marketable Securities Loans, gross Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Loans Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Loans Allowance for loan losses Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Allowance for Loan Losses Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Allowance for Loan Losses Fixed assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Core deposit intangible Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Deferred tax assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Assets Other assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets Total assets acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Assets Deposits Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deposits Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deposits Borrowings Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Long-term Debt Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Long-term Debt Deferred tax liability Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities Other Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Other Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Other Total liabilities assumed Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities Excess of assets acquired over liabilities assumed Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Pacific Premier Bank Subsidiaries [Member] Regulatory Capital Requirements and Other Regulatory Matters Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 Leverage Ratio Tier One Leverage Capital [Abstract] Actual, Amount (in dollars) Tier One Leverage Capital Actual, Ratio (as a percent) Tier One Leverage Capital to Average Assets Minimum Required for Capital Adequacy Purposes Amount (in dollars) Tier One Leverage Capital Required for Capital Adequacy Minimum Required for Capital Adequacy Purposes Ratio (as a percent) Tier One Leverage Capital Required for Capital Adequacy to Average Assets Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars) Tier One Leverage Capital Required to be Well Capitalized Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent) Tier One Leverage Capital Required to be Well Capitalized to Average Assets Common Equity Tier 1 to Risk-Weighted Assets Tangible Capital [Abstract] Actual, Amount (in dollars) Tier One Common Equity Tier One Common Equity Actual, Ratio (as a percent) Tier One Common Capital to Risk Weighted Assets Tier One Common Capital to Risk Weighted Assets Minimum Required for Capital Adequacy Purposes (in dollars) Tier One Common Capital Required for Capital Adequacy Tier One Common Capital Required for Capital Adequacy Minimum Required for Capital Adequacy Purposes (as a percent) Tier One Common Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Common Capital Required for Capital Adequacy to Risk Weighted Assets Required to be Well Capitalized Under Prompt Corrective Action Regulations (in dollars) Tier One Common Capital Required to be Well Capitalized Tier One Common Capital Required to be Well Capitalized Required to be Well Capitalized Under Prompt Corrective Action Regulations (as a percent) Tier One Common Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Common Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 Capital to Risk-Weighted Assets Tier One Risk Based Capital [Abstract] Actual, Amount (in dollars) Tier One Risk Based Capital Actual, Ratio (as a percent) Tier One Risk Based Capital to Risk Weighted Assets Minimum Required for Capital Adequacy Purposes Amount (in dollars) Tier One Risk Based Capital Required for Capital Adequacy Minimum Required for Capital Adequacy Purposes Ratio (as a percent) Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars) Tier One Risk Based Capital Required to be Well Capitalized Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent) Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Total Capital to Risk-Weighted Assets Capital [Abstract] Actual, Amount (in dollars) Capital Actual, Ratio (as a percent) Capital to Risk Weighted Assets Minimum Required for Capital Adequacy Purposes Amount (in dollars) Capital Required for Capital Adequacy Minimum Required for Capital Adequacy Purposes Ratio (as a percent) Capital Required for Capital Adequacy to Risk Weighted Assets Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars) Capital Required to be Well Capitalized Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent) Capital Required to be Well Capitalized to Risk Weighted Assets Schedule of minimum annual lease payments, excluding any renewals and extensions, property taxes, and other operating expenses, due under the agreements Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Offsetting Assets [Table] Offsetting Assets [Table] Offsetting Assets [Line Items] Offsetting Assets [Line Items] Financial assets: Derivative Asset [Abstract] Gross Amounts Recognized in the Consolidated Balance Sheets