Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] U.S. Treasury securities US Treasury Securities [Member] Residential mortgage backed securities issued by U.S. agencies Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Asset-backed security Asset-backed Securities [Member] Mutual funds Mutual Funds [Member] Mutual Funds [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [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, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total debt securities available for sale Available-for-sale Securities, Debt Securities Securities available for sale, at fair value Available-for-sale Securities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Asset Class [Domain] Asset Backed Securities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Changes in Level 3 assets measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance of recurring Level 3 instruments at December 31, 2017 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Total gains or losses (realized/unrealized): Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Total Gains Losses Realized And Unrealized [Abstract] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Assets, Total Gains (Losses) Realized and Unrealized [Abstract] Included in earnings-realized Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Balance of recurring Level 3 instruments at March 31, 2018 Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Schedule of Borrowings and Contractual Obligations Schedule of Debt [Table Text Block] Schedule of FHLB Borrowings Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] Receivables [Abstract] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial loans Commercial Portfolio Segment [Member] Commercial real estate loans – owner occupied Commercial Real Estate, Owner Occupied, Portfolio Segment [Member] Commercial Real Estate, Owner Occupied, Portfolio Segment [Member] Commercial real estate loans – all other Commercial Real Estate, All Other, Portfolio Segment [Member] Commercial Real Estate, All Other, Portfolio Segment [Member] Residential mortgage loans – single family Residential, Single Family, Portfolio Segment [Member] Residential, Single Family, Portfolio Segment [Member] Consumer loans Consumer Portfolio Segment [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment, No allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded Investment, With allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total impaired loans Impaired Financing Receivable, Recorded Investment Unpaid Principal Balance, No allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid Principal Balance, With allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Related Allowance Impaired Financing Receivable, Related Allowance Average Balance, No allowance recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Average Balance, With allowance recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Average Balance Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized, No allowance recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Interest Income Recognized, With allowance recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Securities available for sale and stock Interest and Dividend Income, Securities, Operating Interest-bearing deposits with financial institutions Interest Income, Deposits with Financial Institutions Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Borrowings Interest Expense, Borrowings Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan and lease losses Provision for Loan and Lease Losses Net interest income after provision for loan and lease losses Interest Income (Expense), after Provision for Loan Loss Noninterest income Noninterest Income [Abstract] Service fees on deposits and other banking services Fees and Commissions, Depositor Accounts Net gain on sale of securities available for sale Gain (Loss) on Investments Net (loss) gain on sale of other assets Gain (Loss) on Disposition of Other Financial Assets Other noninterest income Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Noninterest expense Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy Occupancy, Net Equipment and depreciation Equipment Expense Data processing Information Technology and Data Processing FDIC expense Federal Deposit Insurance Corporation Premium Expense Professional fees Professional Fees Business development Business Development Loan related expense Loan Portfolio Expense Insurance General Insurance Expense Other operating expense Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax provision Income Tax Expense (Benefit) Net income allocable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Basic income per common share: Earnings Per Share, Basic [Abstract] Net income available to common shareholders (in dollars per share) Earnings Per Share, Basic Diluted income per common share: Earnings Per Share, Diluted [Abstract] Net income available to common shareholders (in dollars per share) Earnings Per Share, Diluted Weighted average number of common 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 Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Earnings Per Share [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator for basic net income (loss) available to common shareholders Numerator for diluted net income (loss) available to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Denominator: Basic weighted average outstanding shares of common stock (in shares) Dilutive effect of employee stock options (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted average common stock and common stock equivalents (in shares) Basic income per common share(1): Net income available to common shareholders (in dollars per share) Diluted income per common share(1): Net income available to common shareholders (in dollars per share) Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Residential mortgage loans – multi-family Residential, Multi-Family, Portfolio Segment [Member] Residential, Multi-Family, Portfolio Segment [Member] Construction and Land Development Construction And Land Development Portfolio Segment [Member] Construction And Land Development 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] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Gross loans Loans and Leases Receivable, Gross Disclosure of Compensation Related Costs, Share-based Payments [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] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock options Employee Stock Option [Member] 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] Estimated Stock Based Compensation Expense for remainder of year 2018 Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized, Remainder of Fiscal Year Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized, Remainder of Fiscal Year Estimated Stock Based Compensation Expense for year 2019 Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Two Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Two Estimated Stock Based Compensation Expense for year 2020 Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Three Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Three Estimated Stock Based Compensation Expense for year 2021 Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Four Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Four Estimated Stock Based Compensation Expense for year 2022 and Beyond Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Five and Thereafter Employee Service Share Based Compensation Unrecognized Compensation Cost Expected To Be Recognized In Year Five and Thereafter Estimated Stock Based Compensation Expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Assets [Member] Assets [Member] Impaired loans Impaired Loans [Member] Impaired Loans [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Third-Party Pricing Third-Party Pricing Valuation Technique [Member] Third-Party Pricing Valuation Technique [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Assets, fair value disclosure Assets, Fair Value Disclosure Accounting Policies [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained earnings Retained Earnings [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Cumulative adjustment from adoption of new accounting pronouncements Cumulative Effect of New Accounting Principle in Period of Adoption Investments [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-01 Accounting Standards Update 2016-01 [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Total Available-for-sale Securities, Amortized Cost Basis Gross Unrealized Gain Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Estimated Fair Value Available-for-sale Debt Securities [Abstract] Available-for-sale Debt Securities, Amortized Cost Basis [Abstract] Amortized Cost Available-for-sale Debt Securities, Amortized Cost Basis Gross Unrealized Gain Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Loss Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Major Components of Securities Available for Sale and Comparison of Amortized Cost, Estimated Fair Market Values, and Gross Unrealized Gains and Losses Available-for-sale Securities [Table Text Block] Amortized Cost and Estimated Fair Values of Securities Available for Sale by Contractual Maturities and Historical Prepayments based on Prior Twelve Months of Principal Payments Unrealized Gain (Loss) on Investments [Table Text Block] Gross Unrealized Losses and Fair Values of Investments Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Other Investments Schedule Of Other Investments [Table Text Block] Schedule Of Other Investments [Table Text Block] Aggregate fair market value of securities pledged as collateral Financial Instruments, Owned and Pledged as Collateral, at Fair Value Payments acquire debt securities Payments to Acquire Available-for-sale Securities, Debt Available for sale security purchased Payments to Acquire Available-for-sale Securities Proceeds from sale of debt securities available for sale Proceeds from Sale of Available-for-sale Securities, Debt Net gain on sale of securities available for sale Gain (Loss) on Sale of Debt Investments Proceeds on the sale of equity security Proceeds From Sale Of Equity Securities, FV-NI Proceeds From Sale Of Equity Securities, FV-NI Loss on sale of equity security Equity Securities, FV-NI, Gain (Loss) Equity Securities, FV-NI, Gain (Loss) Other than temporary impairment on securities available for sale Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Number of investments in limited partnerships Number Of Investments Without Readily Determinable Fair Value Number Of Investments Without Readily Determinable Fair Value Payments to acquire investments Payments to Acquire Investments Commitment And Contingencies [Table] Commitment And Contingencies [Table] Commitment And Contingencies [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] FHLB Advances Federal Home Loan Bank Advances [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Unfavorable Regulatory Action Unfavorable Regulatory Action [Member] Mortgage Loans on Real Estate, Description, Loan Category [Axis] Mortgage Loans on Real Estate, Description, Loan Category [Axis] Mortgage Loans on Real Estate, Loan Category [Domain] Mortgage Loans on Real Estate, Loan Category [Domain] Other Loans Other Loans [Member] Other loans [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter of credit Letter of Credit [Member] Commitment And Contingencies [Line Items] Commitment And Contingencies [Line Items] Commitment And Contingencies [Line Items] Commitment to fund certain loans including letter of credit Guarantor Obligations, Maximum Exposure, Undiscounted Loss reserve for unfunded loan commitments Provision for Other Losses Loans pledged as collateral to support FHLB borrowings Pledged Assets Separately Reported, Loans Pledged as Collateral, at Fair Value Unused borrowing capacity Debt Instrument, Unused Borrowing Capacity, Amount Maximum borrowings outstanding at any month-end Federal Home Loan Bank, Advances, Activity for Year, Maximum Outstanding at any Month End Short-term FHLB advances outstanding Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months FHLB advances—long-term Long-term Federal Home Loan Bank Advances Weighted-average annualized interest rate Debt, Weighted Average Interest Rate Loss Contingency, Loss in Period Loss Contingency, Loss in Period Segment Reporting [Abstract] Business Segment Information Segment Reporting Disclosure [Text Block] Net Interest Income and Noninterest Income Schedule of Segment Reporting Information, by Segment [Table Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Statement of Financial Position [Abstract] Loans, allowances Loans and Leases Receivable, Allowance 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 Loan Receivable by Past Due Status [Axis] Loan Receivable By Past Due Status [Axis] Loan Receivable by Past Due Status [Axis] Loan Receivable by Past Due Status [Domain] Loan Receivable By Past Due Status [Domain] Loan Receivable by Past Due Status [Domain] Impaired loans less than 90 days delinquent and included in total impaired loans Loans Under Ninety Days Past Due [Member] Loans Under Ninety Days Past Due [Member] Impaired loans: Loans and Leases Receivable, Other Information [Abstract] Nonaccruing loans Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest Nonaccruing restructured loans Financing Receivable Modifications Recorded Investment Nonaccrual Financing Receivable, Modifications, Recorded Investment, Nonaccrual Accruing restructured loans Financing Receivable Modifications Recorded Investment Accruing Financing Receivable, Modifications, Recorded Investment, Accruing ASSETS Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest bearing deposits with financial institutions Interest-bearing Deposits in Banks and Other Financial Institutions Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Interest-bearing time deposits with financial institutions Time Deposits, at Carrying Value Federal Reserve Bank of San Francisco and Federal Home Loan Bank Stock, at cost Federal Home Loan Bank Stock and Federal Reserve Bank Stock Loans (net of allowances of $13,405 and $14,196, respectively) Loans and Leases Receivable, Net Amount Other real estate owned Other Real Estate Accrued interest receivable Interest Receivable Premises and equipment, net Property, Plant and Equipment, Net Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Deposits: Deposits [Abstract] Noninterest-bearing Noninterest-bearing Deposit Liabilities Interest-bearing Interest-bearing Deposit Liabilities Total deposits Deposits Borrowings Debt and Capital Lease Obligations Accrued interest payable Interest Payable Other liabilities Other Liabilities Junior subordinated debentures Junior Subordinated Notes Total liabilities Liabilities Commitments and contingencies (Note 10) Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, no par value, 85,000,000 shares authorized; 23,312,682 and 23,232,515 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Regulatory Capital Requirements [Abstract] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] Composition of Loan Portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Allowance for Loan Losses and Loan Balances Allowance for Credit Losses on Financing Receivables [Table Text Block] Summary of Delinquency Status of Loans by Portfolio Type Past Due Financing Receivables [Table Text Block] Loans on Nonaccrual Status by Portfolio Type Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Summary of Loans by Portfolio Type and Internal Credit Quality Ratings Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of Impaired Loans Impaired Financing Receivables [Table Text Block] Troubled Debt Restructurings Troubled Debt Restructurings on Financing Receivables [Table Text Block] Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Changes in Level 3 Assets Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Assets Measured at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Summary of Significant Unobservable Inputs and Valuation Techniques Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] Estimated Fair Values and Amounts of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Amortization of premium on securities Accretion (Amortization) of Discounts and Premiums, Investments Net gain on sale of securities available for sale Gain (Loss) on Sale of Investments Other than temporary impairment on securities available for sale Net amortization of deferred fees and unearned income on loans Amortization of Deferred Loan Origination Fees, Net Net loss (gain) on sale of other assets Gain (Loss) on Disposition of Other Assets Stock-based compensation expense Share-based Compensation Other Other Noncash Income (Expense) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Net decrease (increase) in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Net increase in other assets Increase (Decrease) in Other Operating Assets Net decrease in income taxes receivable Increase (Decrease) in Income Taxes Receivable Net increase in accrued interest payable Increase (Decrease) in Interest Payable, Net Net decrease in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net decrease in interest-bearing time deposits with financial institutions Proceeds from (Payments for) in Interest-bearing Deposits in Banks Maturities of and principal payments received on securities available for sale and other stock Proceeds from Sale, Maturity and Collection of Investments Purchase of securities available for sale and other stock Payments to Acquire Marketable Securities Proceeds from sale of securities available for sale and other stock Proceeds from Sale and Maturity of Marketable Securities Purchase of other investments Payments to Acquire Equity Method Investments Net decrease (increase) in loans Payments for (Proceeds from) Loans and Leases Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of other assets Proceeds from Sale of Loans and Leases Held-for-investment 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 Cash Provided by (Used in) Financing Activities [Abstract] Net (decrease) increase in deposits Increase (Decrease) in Deposits Proceeds from borrowings Proceeds from Issuance of Debt Payments of borrowings Repayments of Debt Proceeds from exercise of common stock options Proceeds from Stock Options Exercised Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents, beginning of period Cash and Cash Equivalents, end of period Supplementary Cash Flow Information: Supplemental Cash Flow Information [Abstract] Cash paid for interest on deposits and other borrowings Interest Paid Cash paid for income taxes Income Taxes Paid Non-Cash Investing Activities: Noncash Investing and Financing Items [Abstract] Transfer of loans into other assets Other Assets, Transfer to Other Assets Other Assets, Transfer to Other Assets Transfer of loans into other real estate owned Real Estate Owned, Transfer to Real Estate Owned Impact of change in accounting principle Non-Cash Impact Of Change In Accounting Principle Non-Cash Impact Of Change In Accounting Principle Assumption of debt upon foreclosure of property Loans Assumed Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive shares excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Performing Financial Instruments [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans pledged to secure borrowings obtained from the FHLB Loans Pledged as Collateral Period of loan loss history and industry loss factors used to determine historical losses Loans and Leases Receivable, Allowance, Length of Historical and Industry Loss Factors Loans and Leases Receivable, Allowance, Length of Historical and Industry Loss Factors Loans greater than 90 Days and accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Impaired loans with no specific reserves Impaired loans, impaired in prior year Impaired Financing Receivable, with No Related Allowance, Recorded Investment, Impaired Prior Year Impaired Financing Receivable, with No Related Allowance, Recorded Investment, Impaired Prior Year Interest that would have been earned had impaired loans remained current in accordance with original terms Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Troubled debt restructurings, totals Financing Receivable, Modifications, Recorded Investment Specific reserves on TDR's Financing Receivable Modifications Allocation Of Specific Reserves Financing Receivable Modifications Allocation Of Specific Reserves Income tax expense Valuation allowance Deferred Tax Assets, Valuation Allowance Accrued interest or penalties associated with unrecognized tax benefits Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Interest expense recognized Unrecognized Tax Benefits, Interest on Income Taxes Expense Construction and land development loans Deferred fee (income) costs, net Loans and Leases Receivable, Deferred Fee (Income) Costs, Net Loans and Leases Receivable, Deferred Fee (Income) Costs, Net Allowance for loan and lease losses Loans, net Percentage of loan portfolio Percentage Of Loan Portfolio Percentage Of Loan Portfolio Securities available for sale, amortized cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] One year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Over one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Over five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Over ten Years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Securities available for sale, estimated fair value Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] One year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Over one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Over five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Over ten Years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Total Weighted average yield Available-for-sale Securities, Debt Maturities, Weighted Average Yield, Fiscal Year Maturity [Abstract] Available-for-sale Securities, Debt Maturities, Weighted Average Yield, Fiscal Year Maturity [Abstract] One year or less Available For Sale Securities Debt Maturities Within One Year Average Yield Available for sale Securities, Debt Maturities, Within One Year, Average Yield Over one year through five years Available For Sale Securities Debt Maturities After One Through Five Years Average Yield Available for sale Securities, Debt Maturities, After One Through Five Years, Average Yield Over five years through ten years Available For Sale Securities Debt Maturities After Five Through Ten Years Average Yield Available for sale Securities, Debt Maturities, After Five Through Ten Years, Average Yield Over ten Years Available For Sale Securities Debt Maturities After Ten Years Average Yield Available for sale Securities, Debt Maturities, After Ten Years, Average Yield Total Available For Sale Securities Weighted Average Yield Available for sale Securities, Weighted Average Yield Investment [Table] Investment [Table] Investment [Line Items] Investment [Line Items] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Commercial Real Estate Real Estate Portfolio Segments [Member] Real Estate Portfolio Segments [Member] Consumer and Single Family Mortgages Consumer and Residential Single Family Portfolio Segments [Member] Consumer and Residential Single Family Portfolio Segment [Member] Unallocated Unallocated Financing Receivables [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for loans individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for loans collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Total allowance Loans individually 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