Share-based Compensation [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2005 Plan Central Valley Community Bancorp Two Thousand Five Omnibus Incentive Plan [Member] Central Valley Community Bancorp Two Thousand Five Omnibus Incentive Plan [Member] 2015 Plan Central Valley Community Bancorp Two Thousand Fifteen Omnibus Incentive Plan [Member] Central Valley Community Bancorp Two Thousand Fifteen Omnibus Incentive Plan [Member] ESPP Employee Stock Purchase Plan (ESPP) [Member] Employee Stock Purchase Plan (ESPP) [Member] 2007 Plan Folsom Lake Bank 2007 Equity Incentive Plan (2007 Plan) [Member] Folsom Lake Bank 2007 Equity Incentive Plan (2007 Plan) [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Options Employee Stock Option [Member] Restricted Stock Restricted Stock [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Number of shares authorized under plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Number of shares reserved for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Payroll deductions Employee Stock Purchase Plan (ESPP), Payroll Deductions Employee Stock Purchase Plan (ESPP), Payroll Deductions Discount from market price Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date Reserved for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Share-based compensation expense Allocated Share-based Compensation Expense Tax benefit of stock option compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Proceeds from exercise of stock options Proceeds from Stock Options Exercised Excess tax benefit realized for option exercises Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options Unrecognized compensation cost related to non-vested share-based compensation arrangements Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Total fair value of options vested in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, 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 Number of options nonvested and expected to vest (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Other than Options, Nonvested and Expected to Vest, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Other than Options, Nonvested and Expected to Vest, Exercisable, Number Equity instruments other than options weighted average remaining period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Receivables [Abstract] 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] Commercial Commercial Portfolio Segment [Member] Real Estate Real Estate Portfolio Segment [Member] Real Estate Portfolio Segment [Member] Consumer Consumer Portfolio Segment [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 [Member] Commercial and Industrial [Member] Agricultural land and production Agricultural Land and Production [Member] Agricultural land and production [Member] Owner occupied Owner Occupied Real Estate [Member] Owner Occupied Real Estate [Member] Real estate construction and other land loans Real Estate Construction and Other Land Loans [Member] Real Estate Construction and Other Land Loans [Member] Commercial real estate Commercial Real Estate [Member] Agricultural real estate Agricultural Real Estate [Member] Agricultural Real Estate [Member] Other real estate Other Real Estate [Member] Other Real Estate [Member] Equity loans and lines of credit Equity Loans and Lines of Credit [Member] Equity Loans and Lines of Credit [Member] Consumer and installment Consumer and Installment [Member] Consumer and Installment [Member] Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Financing Receivable, Recorded Investment Financing Receivable, Recorded Investment [Line Items] Loans Financing Receivable, Gross Loans and Leases Receivable Disclosure [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Purchased Credit Impaired Loans Purchased Credit Impaired Loans [Member] Purchased Credit Impaired Loans [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Contractually required payments receivable on PCI loans at acquisition: Impaired Financing Receivable, Unpaid Principal Balance Cash flows expected to be collected at acquisition Impaired Financing Receivable, with Related Allowance, Recorded Investment Purchased credit impaired loans Impaired Financing Receivable, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Equity [Abstract] Shareholders' Equity Stockholders' Equity Note Disclosure and Earnings Per Share [Text Block] Stockholders' Equity Note Disclosure and Earnings Per Share [Text Block] Document and Entity Information [Abstract] -- None. No documentation exists for this element. -- 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 Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category 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 Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Public Float Entity Public Float Commitments and Contingencies Disclosure [Abstract] Schedule of Off-balance Sheet Commitments [Table] Schedule of Off-balance Sheet Commitments [Table] Schedule of Off-balance Sheet Commitments [Table] Real estate related Real estate related [Member] Real estate related [Member] Commercial and Real estate related Commercial and Real estate related [Member] Commercial and Real estate related [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Undisbursed lines of credit Unused lines of Credit [Member] Standby letters of credit and financial guarantees Standby Letters of Credit [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Probable loan loss experience on unfunded obligations Probable loan loss experience on unfunded obligations [Member] Probable loan loss experience on unfunded obligations [Member] Commitments and Contingencies Off-balance Sheet Commitments [Line Items] Off-balance Sheet Commitments [Line Items] Federal reserve deposit requirement reserve amount Federal Reserve Deposit Requirement, Reserve Amount Federal Reserve Deposit Requirement, Reserve Amount Uninsured deposits Cash, Uninsured Amount Commitments to extend credit Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Percentage of loan commitments Percentage Of Loan Commitments Percentage Of Loan Commitments Maximum loan to value ratio Maximum loan to value ratio Maximum loan to value ratio Loss Contingency, Estimate of Possible Loss Loss Contingency, Estimate of Possible Loss % of Total Loans Loans and Leases Receivable, Percentage of Gross Loans Loans and Leases Receivable, Percentage of Gross Loans Investments, Debt and Equity Securities [Abstract] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Beginning balance of credit losses recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Amounts related to credit loss for which an OTTI charge was not previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Realized losses for securities sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold Ending balance of credit losses recognized Statement of Financial Position [Abstract] Allowance for credit losses Loans and Leases Receivable, Allowance Preferred stock, liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference Per Share Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, issued (in shares) Preferred Stock, Shares Issued Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Common Stock, authorized (in shares) Common Stock, Shares Authorized Common Stock, issued (in shares) Common Stock, Shares, Issued Common Stock, outstanding (in shares) Common Stock, Shares, Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Upaid Principal Balance, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Cash flows expected to be collected at acquisition Unpaid Principal Balance, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total Recorded Investment Total Unpaid Principal Balance Average Recorded Investment, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Interest Income Recognized, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Average Recorded Investment, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Interest Income Recognized, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Average Recorded Investment, Total Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized, Total Impaired Financing Receivable, Interest Income, Accrual Method Forgone interest on nonaccrual loans Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Income Tax Disclosure [Abstract] 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, beginning of year Unrecognized Tax Benefits Additions based on tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Reductions due to the statute of limitations for tax positions of prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Balance, end of year Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested outstanding shares at beginning of period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested outstanding shares at end of period (shares) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Nonvested outstanding shares at beginning of period (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 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 Nonvested outstanding shares at end of period (in dollars per share) Available-for-sale securities reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Securities in a continuous unrealized loss position Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Realized gains and losses Schedule of Realized Gain (Loss) [Table Text Block] Credit losses recorded in earnings Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Investments by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Statement of Comprehensive Income [Abstract] Net income Net Income (Loss) Attributable to Parent Other Comprehensive Income (Loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized gains (losses) on securities: Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract] Unrealized holdings (losses) gains arising during the period Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Less: reclassification for net gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Less: reclassification for other-than-temporary impairment loss included in net income Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax Transfer of investment securities from held-to-maturity to available-for-sale Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax Amortization of net unrealized gains transferred Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Amortization, before Tax Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Amortization, before Tax Other comprehensive (loss) income, before tax Other Comprehensive Income (Loss), before Tax Tax benefit (expense) related to items of other comprehensive income Other Comprehensive Income (Loss), Tax Total other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Related Party Transactions [Abstract] Loans to Related Parties Related Party Transactions Disclosure [Text Block] Available-for-Sale Securities Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract] Proceeds from sales or calls Proceeds from Sale of Debt Securities, Available-for-sale Gross realized gains from sales or calls Available-for-sale Securities, Gross Realized Gains Gross realized losses from sales or calls Available-for-sale Securities, Gross Realized Losses Accounting Policies [Abstract] Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] 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] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Folsom Lake Bank Folsom Lake Bank [Member] Folsom Lake Bank [Member] Sierra Vista Bank Sierra Vista Bank [Member] Sierra Vista Bank [Member] Visalia Community Bank Visalia Community Bank [Member] Sierra Vista Bank [Member] Service 1st Bank Service 1st Bank [Member] Service 1st Bank [Member] Bank of Madera County Bank of Madera County [Member] Bank of Madera County [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill Acquired finite-lived intangible assets Finite-lived Intangible Assets Acquired Estimated useful life of intangible asset Finite-Lived Intangible Asset, Useful Life Acquired finite-lived intangible assets useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Core deposit intangibles Finite-Lived Intangible Assets, Net Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Amortization of core deposit intangibles Amortization of Intangible Assets Business Combinations [Abstract] Schedule of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Pro Forma Results of Operations Business Acquisition, Pro Forma Information [Table Text Block] Retirement Benefits [Abstract] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Salary Continuation [Member] Salary Continuation [Member] Salary Continuation [Member] Title of Individual [Axis] Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Relationship to Entity [Domain] Certain Key Executives [Member] Certain Key Executives [Member] Certain Key Executives [Member] Postretirement Benefits, Type of Deferred Compensation [Axis] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Contractual term Deferred Compensation Arrangement with Individual, Contractual Term Deferred Compensation Arrangement with Individual, Contractual Term Salary continuation plans, expense for period Deferred Compensation Arrangement with Individual, Compensation Expense Total liability Deferred Compensation Arrangement with Individual, Recorded Liability Cash surrender value of life insurance Cash Surrender Value of Life Insurance Appreciation in cash surrender value of bank owned life insurance Bank Owned Life Insurance Income Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Sierra Vista Bank and Folsom Lake Bank [Member] Sierra Vista Bank and Folsom Lake Bank [Member] Sierra Vista Bank and Folsom Lake Bank [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Net interest income Business Acquisition, Pro Forma Net Interest Income Business Acquisition, Pro Forma Net Interest Income Provision for (reversal of) credit losses Business Acquisition, Pro Forma Provision For (Reversal Of) Credit Losses Business Acquisition, Pro Forma Provision For (Reversal Of) Credit Losses Non-interest income Business Acquisition, Pro Forma Non-Interest Income Business Acquisition, Pro Forma Non-Interest Income Non-interest expense Business Acquisition, Pro Forma Non-Interest Expense Business Acquisition, Pro Forma Non-Interest Expense Income before provision for income taxes Business Acquisition, Pro Forma Income Before Income Taxes Business Acquisition, Pro Forma Income Before Income Taxes Provision for income taxes Business Acquisition, Pro Forma Income Tax Expense Benefit Business Acquisition, Pro Forma Income Tax Expense Benefit Net income Business Acquisition, Pro Forma Net Income (Loss) Net income available to common shareholders Business Acquisitions, Pro Forma Net Income (Loss) Available To Common Stockholders, Basic Business Acquisitions, Pro Forma Net Income (Loss) Available To Common Stockholders, Basic Basic earnings per common share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted earnings per common share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Diluted Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning of year Acquired goodwill Goodwill, Acquired During Period Impairment Goodwill, Impairment Loss End of year Condensed Financial Information Disclosure [Abstract] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] Condensed Cash Flow Statement [Line Items] Condensed Cash Flow Statement [Line Items] [Line Items] for Disclosure of information about condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations. Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Undistributed net income of subsidiary, net of distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Stock-based compensation Share-based Compensation Tax benefit from exercise of stock options Excess Tax Benefit from Share-based Compensation, Operating Activities Net (increase) decrease in other assets Increase (Decrease) in Other Operating Assets Net increase (decrease) in other liabilities Increase (Decrease) in Other Operating Liabilities Benefit for deferred income taxes Increase (Decrease) in Deferred Income Taxes Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows used in investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Investment in subsidiary Payments to Acquire Interest in Subsidiaries and Affiliates Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Cash dividend payments on common stock Payments of Ordinary Dividends, Common Stock Purchase and retirement of common stock Payments for Repurchase of Common Stock Tax benefit from exercise of stock options Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS AT END OF YEAR Cash paid during the year for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Common stock issued in acquisitions Stock Issued Proceeds from stock issued under employee stock purchase plan Proceeds from Stock Plans Banking and Thrift [Abstract] Borrowing Arrangements Federal Home Loan Bank Advances, Disclosure [Text Block] Dividends Dividends, Cash [Abstract] Dividends declared and paid by subsidiary Dividends Declared By Subsidiary Dividends Declared By Subsidiary Dividends declared and paid during the period Dividends, Common Stock, Cash Dividends declared, per share Common Stock, Dividends, Per Share, Declared Share Repurchase Plan Share Repurchase Program [Abstract] Share Repurchase Program [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] California CALIFORNIA Class of Stock [Line Items] Class of Stock [Line Items] Dividends available for distribution free of restrictions Amount Available for Dividend Distribution without Affecting Capital Adequacy Requirements Folsom, and Rancho Cordova, California [Member] Folsom, and Rancho Cordova, California [Member] Folsom, and Rancho Cordova, California [Member] Folsom, California [Member] Folsom, California [Member] Folsom, California [Member] Fair Oaks, California [Member] Fair Oaks, California [Member] Fair Oaks, California [Member] Cameron Park, California [Member] Cameron Park, California [Member] Cameron Park, California [Member] Consideration transferred Business Combination, Consideration Transferred Estimated number of shares to be issued in merger transaction (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Number of branches to be acquired Number of Branches Acquired Number of Branches Acquired Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Acquisition and integration expenses Business Combination, Acquisition Related Costs Cash Payments to Acquire Businesses, Gross Non-impaired loans Business Combination, Acquired Receivable, Fair Value Customer receivables Business Combination, Acquired Receivables, Gross Contractual Amount Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles General Business Description and Basis of Presentation [Text Block] Principles of Consolidation Consolidation, 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] Investment Securities Investment, Policy [Policy Text Block] Loans and Acquired Loans and Leases Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Bank Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Federal Home Loan Bank (FHLB) Stock Federal Home Loan Bank Stock Policy [Policy Text Block] Federal Home Loan Bank Stock Policy [Policy Text Block] Investments in Low Income Housing Tax Credit Funds Investments in Low Income Housing Tax Credit Funds, Policy [Policy Text Block] Investments in Low Income Housing Tax Credit Funds, Policy [Policy Text Block] Other Real Estate Owned Loans and Leases Receivable, Real Estate Acquired Through Foreclosure, Policy [Policy Text Block] Foreclosed Assets Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Bank Owned Life Insurance Bank Owned Life Insurance Policy [Policy Text Block] Bank Owned Life Insurance Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] Income Taxes and Accounting for Uncertainty in Income Taxes Income Tax, Policy [Policy Text Block] Retirement Plans Pension and Other Postretirement Plans, Policy [Policy Text Block] Earnings Per Common 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] Restrictions on Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Share-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Dividend Restriction Dividends, Policy [Policy Text Block] Dividends, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Property, Plant and Equipment [Abstract] Schedule of bank premises and equipment Property, Plant and Equipment [Table Text Block] Bank Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Cash dividends per common share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Schedule of 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] Buildings and improvements Building and Building Improvements [Member] Furniture, fixtures and equipment Furniture, Fixtures And Equipment [Member] Furniture, Fixtures And Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Bank premises and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Bank premises and equipment, net Property, Plant and Equipment, Net Depreciation and amortization Depreciation, Depletion and Amortization Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Interest and fees on loans Interest and Fee Income, Loans and Leases Interest on deposits in other banks Interest Income, Deposits with Financial Institutions Interest and dividends on investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Exempt from Federal income taxes Interest Income, Securities, Operating, Tax Exempt Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Interest on deposits Interest Expense, Domestic Deposits Interest on junior subordinated deferrable interest debentures Interest Expense, Junior Subordinated Debentures Other Interest Expense, Other Total interest expense Interest Expense Net interest income before provision for credit losses Interest Income (Expense), Net (Reversal of) Provision for credit losses Provision for Loan and Lease Losses Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Non-interest income: Noninterest Income [Abstract] Service charges Service Charges Service Charges Interchange fees Interchange Fees Interchange Fees Loan placement fees Loan Placement Fees This element relates to loan placement fee income which is earned from the brokerage of single-family residential mortgage loans. Net realized gain on sale of credit card portfolio Gains (Losses) on Sales of Credit Card Portfolio Net realized gains on sales and calls of investment securities Debt and Equity Securities, Gain (Loss) Other-than-temporary impairment loss on investment securities Other than Temporary Impairment Losses, Investments Federal Home Loan Bank dividends Dividends Federal Home Loan Bank Stocks This element represents the amount of dividend income recognized during the period from stock owned in Federal Home Loan Bank. Other income Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-interest expenses: Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy and equipment Occupancy, Net Regulatory assessments Regulatory Assessments This element represents the expenses incurred which relate to assessments by regulatory authorities. Data processing expense Information Technology and Data Processing Professional services Professional Fees ATM/Debit card expenses ATM and Debit Card Expenses ATM and Debit Card Expenses Information technology License and Maintenance Contract Costs License and Maintenance Contract Costs Directors’ expenses Directors' Expenses Directors' Expenses Advertising Advertising Expense Internet banking expenses Internet Banking Expense Internet Banking Expense Other expense Other Noninterest Expense Total non-interest expenses Noninterest Expense Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net Income (Loss) Available to Common Stockholders, Basic Net income per common share: Earnings Per Share [Abstract] Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Income Taxes Income Tax Disclosure [Text Block] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Deferred Bonus and Profit Sharing Plan, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] Director [Member] Director [Member] Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Interest rate on deferred amounts Deferred Compensation Interest Rate on Deferred Amounts Deferred Compensation Interest Rate on Deferred Amounts Net deferrals included in accrued interest payable and other liabilities Maximum deferment of compensation each year Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Expected Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Parent Only Condensed Financial Statements Condensed Financial Information of Parent Company Only Disclosure [Text Block] Stock option activity Share-based Compensation, Stock Options, Activity [Table Text Block] Restricted stock activity Nonvested Restricted Stock Shares Activity [Table Text Block] Condensed Balance Sheets Condensed Balance Sheet [Table Text Block] Condensed Statements of Income and Comprehensive Income Condensed Income Statement [Table Text Block] Condensed Statements of Cash Flows Condensed Cash Flow Statement [Table Text Block] Future minimum lease payments on noncancelable operating leases Schedule of Rent Expense [Table Text Block] Off-balance-sheet credit risk Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Merger consideration: Business Combination, Consideration Transferred [Abstract] Common stock issued Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value of Total Consideration Transferred Recognized amounts of identifiable assets acquired and liabilities assumed: Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Loans, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Investments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Premises and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Federal Home Loan Bank stock Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Deferred taxes and taxes receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent Bank owned life insurance Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total assets acquired Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities Deposit premium Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Short-term borrowings - Federal Home Loan Bank Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt 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 Total identifiable net assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Rental expense for period Operating Leases, Rent Expense, Net 2018 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total future minimum lease payments Operating Leases, Future Minimum Payments Due Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained Earnings Retained Earnings [Member] Premises Building [Member] Leasehold improvements, furniture, fixtures and equipment Leasehold Improvements, Furniture, Fixtures And Equipment [Member] Leasehold Improvements, Furniture, Fixtures And Equipment [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-01 [Member] Accounting Standards Update 2016-01 [Member] Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-02 [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] [Line Items] for Significant Accounting Policies [Table] Effect of accounting principle New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets Number of full service offices Number of Full Service Offices Number of Full Service Offices HTM transfers to AFS securities, fair value Held-to-maturity Securities Transfers to Available-for-sale Securities Held-to-maturity Securities Transfers to Available-for-sale Securities Real Estate - owner-occupied percentage minimum for collateral Commercial Real Estate Owner Occupied Percentage For Collateral Commercial Real Estate Owner Occupied Percentage For Collateral Estimated useful lives of premises and equipment Property, Plant and Equipment, Useful Life Foreclosed assets Other Real Estate, Foreclosed Assets, and Repossessed Assets Excess tax benefit from exercise of stock options and vesting of restricted shares Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount Retained earnings Retained Earnings (Accumulated Deficit) Right-of-use asset and lease liability Operating Lease, Right-of-Use Asset Loans and Allowance for Credit Losses Allowance for Credit Losses [Text Block] Interest expense recognized on interest-bearing deposits Interest Expense, Domestic Deposits [Abstract] Savings Interest Expense, Savings Deposits Money market Interest Expense, Money Market Deposits NOW accounts Interest Expense, Negotiable Order of Withdrawal (NOW) Deposits Time certificates of deposit Interest Expense Domestic Deposit Liabilities, Certificates of Deposit Total interest expense recognized Interest Expense Domestic Deposit Liabilities Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Employee Benefits Compensation and Employee Benefit Plans [Text Block] Deposits by type: Deposits, by Type [Abstract] Savings Deposits, Savings Deposits Money market Deposits, Money Market Deposits NOW accounts Deposits, Negotiable Order of Withdrawal (NOW) Time, $250,000 or more Time Deposits, $100,000 or More Time, under $250,000 Time Deposits, Less than $100,000 Total deposit liabilities Interest-bearing Deposit Liabilities, Domestic Investment securities Available-for-sale Securities Disclosure [Text Block] Disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. ASSETS Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-earning deposits in other banks Interest-bearing Deposits in Banks and Other Financial Institutions Federal funds sold Federal Funds Sold Total cash and cash equivalents Available-for-sale debt securities Debt Securities, Available-for-sale Equity securities Available-for-sale Securities, Equity Securities Loans, less allowance for credit losses of $9,104 at December 31, 2018 and $8,778 at December 31, 2017 Loans and Leases Receivable, Net Amount Bank premises and equipment, net Bank owned life insurance Bank Owned Life Insurance Federal Home Loan Bank stock Federal Home Loan Bank Stock Accrued interest receivable and other assets Accrued Interest Receivable and Other Assets Carrying amount as of the balance sheet date of interest earned but not received. Also, represents the carrying amount of the sum of assets not individually reported in the financial statements, or separately disclosed in the notes. Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Deposits: Deposits [Abstract] Non-interest bearing Noninterest-bearing Deposit Liabilities, Domestic Interest bearing Total deposits Deposits Short-term borrowings Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months Junior subordinated deferrable interest debentures Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Accrued interest payable and other liabilities Accrued Interest Payable and Other Liabilities Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Also, represents the carrying value of the sum of liabilities not individually reported in the financial statements, or separately disclosed in the notes. Total liabilities Liabilities Commitments and contingencies (Note 12) Commitments and Contingencies Shareholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, no par value; 10,000,000 shares authorized, none issued and outstanding Preferred Stock, Value, Issued Common stock, no par value; 80,000,000 shares authorized; issued and outstanding: 13,754,965 at December 31, 2018 and 13,696,722 at December 31, 2017 Common Stock, Value, Issued Accumulated other comprehensive (loss) income, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Current Federal income tax expense Current Federal Tax Expense (Benefit) Current State income tax expense (benefit) Current State and Local Tax Expense (Benefit) Total current income tax expense Current Income Tax Expense (Benefit) Deferred Federal income tax expense (benefit) Deferred Federal Income Tax Expense (Benefit) Deferred State income tax expense (benefit) Deferred State and Local Income Tax Expense (Benefit) Total deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Remeasurement resulting from Tax Act, Federal Tax Cuts and Jobs Act of 2017, Federal Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Federal Income Tax Expense (Benefit) Remeasurement resulting from Tax Act, State Tax Cuts and Jobs Act of 2017, State and Local Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, State and Local Income Tax Expense (Benefit) Remeasurement resulting from Tax Act Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Provision (benefit) from income taxes, Federal Federal Income Tax Expense (Benefit), Continuing Operations Provision (benefit) from income taxes, State State and Local Income Tax Expense (Benefit), Continuing Operations Provision for income taxes Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Loans Ending balance: individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Brokers and Dealers [Abstract] Junior Subordinated Deferrable Interest Debentures Subordinated Borrowings Disclosure [Text Block] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Federal Internal Revenue Service (IRS) [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Operating loss carryforwards Operating Loss Carryforwards Deferred tax assets: Components of Deferred Tax Assets [Abstract] Allowance for credit losses 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 Unrealized loss on available-for-sale investment securities Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Net operating loss carryovers Deferred Tax Assets, Operating Loss Carryforwards Mark-to-market adjustment Deferred Tax Assets, Fair Value Adjustment Deferred Tax Assets, Fair Value Adjustment Other deferred tax assets Deferred Tax Assets Other Deferred Taxes Deferred Tax Assets Other Deferred Taxes Other-than-temporary impairment Deferred Tax Assets Other Than Temporary Impairment Deferred Tax Assets Other Than Temporary Impairment Loan and investment impairment Deferred Tax Assets Loan And Investment Impairment Deferred Tax Assets Loan And Investment Impairment Partnership income Deferred Tax Asset Partnership Income Deferred Tax Asset Partnership Income State taxes Deferred Tax Assets, State Taxes Total deferred tax assets Deferred Tax Assets, Gross Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Finance leases Deferred Tax Liabilities, Financing Arrangements Unrealized gain on available-for-sale investment securities Deferred Tax Liabilities, Investments Core deposit intangible Deferred Tax Liabilities, Intangible Assets FHLB stock Deferred Tax Liabilities Federal Home Loan Bank Stock Deferred Tax Liabilities Federal Home Loan Bank Stock Loan origination costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Bank premises and equipment Deferred Tax Liabilities, Property, Plant and Equipment Total deferred tax liabilities Deferred Tax Liabilities, Net Net deferred tax assets Deferred Tax Assets, Net Aggregate maturities of time deposits: Maturities of Time Deposits [Abstract] 2018 Time Deposit Maturities, Next Twelve Months 2019 Time Deposit Maturities, Year Two 2020 Time Deposit Maturities, Year Three 2021 Time Deposit Maturities, Year Four 2022 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Total time deposits Time Deposits Deposits Deposit Liabilities Disclosures [Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Central Valley Community Bancorp and Subsidiary Reportable Legal Entities [Member] Central Valley Community Bank Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 Leverage Ratio Tier One Leverage Capital [Abstract] Tier One Leverage Capital Tier One Leverage Capital Tier One Leverage Capital to Average Assets Tier One Leverage Capital to Average Assets Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 Common Equity Ratio Common Equity Tier One Ratio [Abstract] Common Equity Tier One Ratio [Abstract] Tier One Common Equity Tier One Common Equity Tier One Common Equity Tier One Common Equity to Average Assets Tier One Common Equity to Average Assets Tier One Common Equity to Average Assets Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy to Average Assets Tier One Common Equity Required for Capital Adequacy to Average Assets Tier One Common Equity Required for Capital Adequacy to Average Assets Tier 1 Risk-Based Capital Ratio Tier One Risk Based Capital [Abstract] Tier One Risk Based Capital Tier One Risk Based Capital Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total Risk-Based Capital Ratio Capital [Abstract] Capital Capital Capital to Risk Weighted Assets Capital to Risk Weighted Assets Capital Required for Capital Adequacy Capital Required for Capital Adequacy Capital Required for Capital Adequacy to Risk Weighted Assets Capital Required for Capital Adequacy to Risk Weighted Assets Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Real Estate and Consumer Real Estate and Consumer Portfolio Segments [Member] Real Estate and Consumer Portfolio Segments [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Reserves specific to modified loans Financing Receivable, Modifications, Related Allowance Financing Receivable, Modifications, Related Allowance Additional commitments to lend Loans and Leases Receivable, Impaired, Commitment to Lend Number of Loans Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Principal Modification Financing Receivable, Modifications, Amount of Principal Modifications Made During Period Financing Receivable, Modifications, Amount of Principal Modifications Made During Period Post Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Outstanding Recorded Investment Financing Receivable, Modifications, Recorded Investment Defaults on troubled debt restructurings Financing Receivable, Modifications, Subsequent Defaults During Period, Number of Contracts Financing Receivable, Modifications, Subsequent Defaults During Period, Number of Contracts Federal income tax, at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State taxes, net of Federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Tax exempt investment security income, net Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Bank owned life insurance, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Percent Compensation - Stock Compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Re-measurement resulting from Tax Act Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Change in uncertain tax positions Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] U.S. Government agencies US Government Agencies Debt Securities [Member] U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Private label residential mortgage and asset backed securities Mortgage-backed Securities, Issued by Private Enterprises [Member] Other equity securities Equity Securities [Member] Schedule of Available-for-sale Securities Debt Securities, Available-for-sale [Line Items] Within one year, amortized cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Within one year, estimated fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value After one year through five years, amortized cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost After one year through five years, estimated fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value After five years through ten years, amortized cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost After five years through ten years, estimated fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value After ten years, amortized cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost After ten years, estimated fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Total securities with single maturity date, amortized cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Total securities with single maturity date, estimated fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value Investment securities not due at a single maturity date, amortized cost Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Investment securities not due at a single maturity date, estimated fair value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Debt securities, amortized cost Debt Securities, Available-for-sale, Amortized Cost Available-for-sale investment securities Available-for-sale Securities Held-to-Maturity Securities Debt Securities, Held-to-maturity, Sale, Excluding Other-than-temporary Impairment [Abstract] Proceeds from calls Proceeds from Sale and Maturity of Held-to-maturity Securities Gross realized gains from sales or calls Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss) Summary of aggregate activity involving related party borrowers Summary of Aggregate Activity Involving Related Parties [Table Text Block] Summary of Aggregate Activity Involving Related Parties [Table Text Block] Loans to related parties Loans and Leases Receivable, Related Parties [Roll Forward] Balance at beginning of year Loans and Leases Receivable, Related Parties Disbursements Loans and Leases Receivable, Related Parties, Additions Amounts repaid Loans and Leases Receivable, Related Parties, Proceeds Balance at end of year Undisbursed commitments to related parties Undisbursed Commitments To Related Parties Undisbursed Commitments To Related Parties Fair Value Disclosures [Abstract] Fair Value Measurements Financial Instruments Disclosure [Text Block] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank, Advances, Branch of FHLB Bank, State [Domain] Federal Home Loan Bank Branch [Domain] San Francisco Branch San Fransisco Branch [Member] San Fransisco Branch [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Federal Home Loan Bank Advances Federal Home Loan Bank Advances [Member] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] Securities Pledged as Collateral Debt Securities [Member] Borrowing Arrangements Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Advances from FHLB Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Loans pledged as collateral Loans Pledged as Collateral Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Investments securing FHLB advances, amortized cost Maximum borrowing capacity on lines of credit Line of Credit Facility, Maximum Borrowing Capacity Federal funds purchased Federal Funds Purchased Line of credit, current Line of Credit, Current Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Debt Securities, Amortized Cost Available-for-sale investment securities, Amortized cost Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Gross Unrealized Gains Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Impaired loans Impaired Financing Receivable [Member] Impaired Financing Receivable [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] Fair Value Estimate of Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Valuation allowance Financing Receivable, Allowance for Credit Losses Write-offs Allowance for Loan and Lease Losses, Write-offs Loans receivable Loans Receivable, Fair Value Disclosure Statement of Cash Flows [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Net decrease (increase) in deferred loan costs Amortization of Deferred Loan Origination Fees, Net Depreciation Depreciation, Nonproduction Accretion Accretion (Amortization) of Discounts and Premiums, Investments Amortization Amortization Excess tax benefit from exercise of stock options Other than temporary impairment losses on investment securities Net realized gains on sales and calls of available-for-sale investment securities Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Net realized gains on sales or calls of held-to-maturity investment securities Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss), Excluding Other-than-temporary Impairment Net loss on sale and disposal of equipment Gain (Loss) on Disposition of Property Plant Equipment Write down of equity investments Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Increase in bank owned life insurance, net of expenses Life Insurance, Corporate or Bank Owned, Change in Value Net gain on sale of credit card portfolio Net gain on bank owned life insurance Gain (Loss) on Bank Owned Life Insurance Gain (Loss) on Bank Owned Life Insurance Net decrease (increase) in accrued interest receivable and other assets Increase (Decrease) in Accrued Interest Receivable and Other Operating Assets, Net The net change during the reporting period in the amount due from borrowers for interest payments and other operating assets not otherwise defined in the taxonomy. Net (decrease) increase in accrued interest payable and other liabilities Increase (Decrease) in Interest Payable and Other Operating Liabilities, Net This element represents net increase or decrease in accrued interest payable and other liabilities not otherwise defined in the taxonomy. Benefit for deferred income taxes Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash and cash equivalents acquired in acquisitions Cash Acquired from Acquisition Purchases of available-for-sale investment securities Payments to Acquire Available-for-sale Securities Proceeds from sales or calls of available-for-sale investment securities Proceeds from Sale of Available-for-sale Securities Proceeds from sales or calls of held-to-maturity investment securities Proceeds from maturity and principal repayment of available-for-sale investment securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sale of credit card portfolio Proceeds from Sales of Credit Card Portfolio Proceeds from Sales of Credit Card Portfolio Net increase in loans Payments for (Proceeds from) Loans and Leases Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from bank owned life insurance Proceeds from Life Insurance Policy Proceeds from sale of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows From Financing Activities: Net (decrease) increase in demand, interest-bearing and savings deposits Net Increase (Decrease) in Demand Interest Bearing and Savings Deposits The net cash inflow (outflow) in the total of all interest bearing deposit accounts, classified as cash flows from financing activities. Net decrease in time deposits Increase (Decrease) in Time Deposits Proceeds from short-term borrowings from Federal Home Loan Bank Proceeds from FHLBank Borrowings, Financing Activities Repayments of short-term borrowings to Federal Home Loan Bank Payments of FHLBank Borrowings, Financing Activities Proceeds of borrowings from other financial institutions Proceeds from Deposits with Other Institutions Repayments of borrowings from other financial institutions Repayments of Other Debt Excess tax benefit from exercise of stock options Net cash used in financing activities (Decrease) increase in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Cash paid during the year for: Cash Paid [Abstract] Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes Income Taxes Paid, Net Transfer of securities from held-to-maturity to available-for-sale Transfer to Investments Unrealized gain on transfer of securities from held-to-maturity to available-for-sale Unrealized Gain (Loss) on Securities Transferred to Investments Unrealized Gain (Loss) on Securities Transferred to Investments Transfer of loans to other assets Transfer of Loans to Other Assets Transfer of Loans to Other Assets Common stock issued in acquisitions Recurring Fair Value, Measurements, Recurring [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] Other repossessed assets Other Repossessed Assets, Fair Value Disclosure Other Repossessed Assets, Fair Value Disclosure Assets, fair value Assets, Fair Value Disclosure 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] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Recorded Investment Greater Than 90 Days Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Non-accrual Financing Receivable, Recorded Investment, Nonaccrual Status Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Line Items] Condensed Balance Sheet Statement [Line Items] [Line Items] for Disclosure of information about condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. Cash and cash equivalents Investment in Bank subsidiary Investment in Bank subsidiary Investment in Bank subsidiary Other assets Other Assets Liabilities: Liabilities [Abstract] Junior subordinated debentures due to subsidiary grantor trust Other liabilities Other Liabilities Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, Series C Common stock Total shareholders' equity Total liabilities and shareholders' equity 2018 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four