Fair Value Disclosures [Abstract] Schedule of assets and liabilities measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of changes in the Level 3 securities AFS measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of assets measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of estimated fair values of financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Receivables [Abstract] Loans, Allowance for Credit Losses - Loans, and Credit Quality Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accretion Discount [Roll Forward] Accretion Discount [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Balance at beginning of period Accretion Discount Represents Accretion Of Discount. Acquired balance, net Acquired Balance Net Represents Acquired balance net . Accretion to loan interest income Accretion To Loan Interest Income Represents Accretion to loan interest income. Disposals of loans Disposals Of Loans Represents Disposals of loans. Balance at end of period Schedule of loan composition by portfolio segment Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of changes in allowance for credit losses by portfolio segment Financing Receivable, Allowance for Credit Loss [Table Text Block] Schedule of collateral dependent loans by portfolio segment Collateral Dependent Financing Receivables [Table Text Block] Collateral Dependent Financing Receivables [Table Text Block] Schedule of impaired loans by portfolio segment Impaired Financing Receivables [Table Text Block] Schedule of past due loans by portfolio segment Financing Receivable, Past Due [Table Text Block] Schedule of nonaccrual loans by portfolio segment Financing Receivable, Nonaccrual [Table Text Block] Schedule of loans by loan risk categories by portfolio segment Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of non accretable discount Schedule Of Non Accretable Discount [Table Text Block] Schedule of non accretable discount. Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Trust services fee income Fiduciary and Trust [Member] Brokerage fee income Administrative Service [Member] Service charges on deposit accounts Deposit Account [Member] Card interchange income Credit and Debit Card [Member] Statement [Line Items] Statement [Line Items] Interest income: Interest and Dividend Income, Operating [Abstract] Loans, including loan fees Interest and Fee Income, Loans and Leases Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Tax-exempt Interest Income, Securities, Operating, Tax Exempt Other interest income Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Short-term borrowings Interest Expense, Short-term Borrowings Long-term borrowings Interest Expense, Long-term Debt Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for credit losses Financing Receivable, Credit Loss, Expense (Reversal) Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Fees and commissions Revenue from Contract with Customer, Including Assessed Tax Mortgage income, net Fees and Commissions, Mortgage Banking and Servicing BOLI income Bank Owned Life Insurance Income Asset gains (losses), net Gain (Loss) on Disposition of Assets for Financial Service Operations Other income Noninterest Income, Other Total noninterest income Noninterest Income Noninterest expense: Noninterest Expense [Abstract] Personnel Labor and Related Expense Occupancy, equipment and office Occupancy Equipment and Office Expense This element represent Occupancy, Equipment And Office Expense. Business development and marketing Business Development Data processing Information Technology and Data Processing Intangibles amortization Amortization of Intangible Assets Other expense Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to Nicolet Bankshares, Inc. Net Income (Loss) Attributable to Parent Earnings per common share: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average 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 Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Certificates of deposit in other banks Certificates Of Deposit Fair Value Disclosure This element represent deposits made by entity with other banks. Securities AFS Debt Securities, Available-for-sale Other investments, including equity securities Other Investment Fair Value Disclosure This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. Loans held for sale Loans Held-for-sale, Fair Value Disclosure Loans, net Loans Receivable, Fair Value Disclosure BOLI Cash Surrender Value, Fair Value Disclosure MSR asset Msr Asset Represents MSR asset. Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits Deposits, Fair Value Disclosure Short-term borrowings Short-term Debt, Fair Value Long-term borrowings Long-term Debt, Fair Value Debt Securities, Available-for-sale [Abstract] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. government agency securities US Government-sponsored Enterprises Debt Securities [Member] State, county and municipals US States and Political Subdivisions Debt Securities [Member] Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Corporate debt securities Corporate Debt Securities [Member] Schedule of Available-for-sale Securities [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Accounting Policies [Abstract] Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Share-based Payment Arrangement [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] Award Type [Domain] Award Type [Domain] Restricted Stock Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning balance outstanding (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in usd 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 usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending balance outstanding (in usd per share) Restricted Shares Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning balance outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance outstanding (in shares) Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Measured at Fair Value on a Nonrecurring Basis Fair Value, Nonrecurring [Member] Fair Value Measurements Using Level 1 Fair Value Measurements Using Level 2 Fair Value Measurements Using Level 3 Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Collateral dependent loans Collateral Dependent Loans [Member] Collateral Dependent Loans Impaired loans Collateral Dependent Impaired Loans [Member] Represents the collateral dependent impaired loans. Other real estate owned (“OREO”) Other Real Estate Owned [Member] Represents classes of assets measured and collateral-dependent impaired loans. MSR asset Msr Asset [Member] Represents MSR assets. 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] Assets, fair value disclosure Assets, Fair Value Disclosure Statement of Financial Position [Abstract] Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-earning deposits Interest-bearing Deposits in Banks and Other Financial Institutions Cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Certificates of deposit in other banks Time Deposit In Other Banks It represents amount of time deposit in other banks. Securities available for sale (“AFS”), at fair value Other investments Other Investments Loans held for sale Loans Receivable Held-for-sale, Amount Loans Financing Receivable, before Allowance for Credit Loss Allowance for credit losses - loans (“ACL-Loans”) Financing Receivable, Allowance for Credit Loss Loans, net Financing Receivable, after Allowance for Credit Loss Premises and equipment, net Property, Plant and Equipment, Net Bank owned life insurance (“BOLI”) Bank Owned Life Insurance Goodwill and other intangibles, net Intangible Assets, Net (Including Goodwill) Accrued interest receivable and other assets Interest Receivable and Other Assets Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Noninterest-bearing demand deposits Noninterest-bearing Deposit Liabilities Interest-bearing deposits Interest-bearing Deposit Liabilities Total deposits Deposits Short-term borrowings Short-term Debt Long-term borrowings Long-term Debt Accrued interest payable and other liabilities Other Liabilities Total liabilities Liabilities Stockholders’ Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common stock Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total Nicolet Bankshares, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity and noncontrolling interest Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities, noncontrolling interest and stockholders’ equity Liabilities and Equity Preferred shares authorized (no par value) (in shares) Preferred Stock, Shares Authorized Preferred shares issued and outstanding (in shares) Preferred Stock, Shares Issued Common shares authorized (par value $0.01 per share) (in shares) Common Stock, Shares Authorized Common shares outstanding (in shares) Common Stock, Shares, Outstanding Common shares issued (in shares) Common Stock, Shares, Issued Schedule of weighted average assumption for stock option Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of stock options outstanding Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of restricted stock awards Nonvested Restricted Stock Shares Activity [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Available-for-sale Securities Available-for-sale Securities [Member] Recurring basis fair value measurements Fair Value, Recurring [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Level 3 Fair Value Measurements: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at beginning of year Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Acquired balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Paydowns/Sales/Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Balance at end of period Schedule of basic and diluted earnings per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial portfolio segment Commercial Portfolio Segment [Member] Commercial real estate portfolio segment Commercial Real Estate Portfolio Segment [Member] Residential Residential Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Commercial & industrial Commercial and Industrial Financing Receivables [Member] Represents financing receivables related to commercial and industrial loans. Owner-occupied CRE Commercial Real Estate Owner Occupied [Member] Represents the financing receivables related to property that is owner occupied and used for residential purpose. Agricultural Agricultural [Member] Agricultural [Member] CRE investment Cre Investment [Member] Represents information related to CRE investment. Construction & land development Construction and Land Development [Member] Represents the financing receivables related to property that is used for construction and land development. Residential construction Construction Loans [Member] Retail & other Retail and Other Financing Receivables [Member] Represents the financing receivables related to property that is used for retail and other purposes. Lien Category [Axis] Lien Category [Axis] Lien Category [Domain] Lien Category [Domain] Residential first mortgage First Lien [Member] Represents information related to First Lien. Residential junior mortgage Junior Lien [Member] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] 30-89 Days Past Due (accruing) Financial Asset, 30 To 89 Days Past Due [Member] Financing receivables that are more than 30 days past due but fewer than 89 days past due. 90 Days & Over or nonaccrual Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Past due loans Financing Receivable, Past Due Current Financing Receivable, Not Past Due Total Percent past due Financing Receivable, Percent Past Due Percent of current loans Financing Receivable Recorded Investment Current Percentage Of Loan Represents the percentage of loans financing receivables that are current to total loans. Percent of total loans Percentage Of Loans By Past Due Status Represents the percentage of loan by past due status. Debt Disclosure [Abstract] Schedule of components of long-term borrowings Schedule of Long-term Debt Instruments [Table Text Block] Schedule of junior subordinated debentures Schedule Of Junior Subordinated Debentures [Table Text Block] It represents junior subordinated debentures. Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Stock Incentive Plan Stock Incentive Plan [Member] This element represents stock incentive plan. Stock Options Share-based Payment Arrangement, Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected average life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted average per share fair value of options (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Owner-occupied CRE Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Real Estate Real Estate [Member] Other Business Assets Other Business Assets [Member] Other Business Assets [Member] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Loans Collateral Dependent Financing Receivable, Unpaid Principal Balance Collateral Dependent Financing Receivable, Unpaid Principal Balance Without an Allowance Collateral Dependent Financing Receivable, With No Related Allowance Collateral Dependent Financing Receivable, With No Related Allowance With an Allowance Collateral Dependent Financing Receivable, With Related Allowance Collateral Dependent Financing Receivable, With Related Allowance Allowance Allocation Collateral Dependent Financing Receivable, Related Allowance Collateral Dependent Financing Receivable, Related Allowance Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [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 deposit intangibles Core Deposits [Member] Customer list intangibles: Customer Lists [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Goodwill Goodwill Other intangibles Finite-Lived Intangible Assets, Net Goodwill and other intangibles, net Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Junior subordinated debentures Junior Subordinated Debt [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] 2004 Nicolet Bankshares Statutory Trust Nicolet Bankshares Statutory Trust I [Member] Represents wholly-owned statutory trust from by company. Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 2005 Mid-Wisconsin Financial Services, Inc. Mid Wisconsin Financial Services Inc [Member] Represents information about Mid Wisconsin Financial Services Inc. 2006 Baylake Corp. Baylake Corp [Member] Information of Baylake Corp. 2004 First Menasha Bancshares, Inc. First Menasha Bancshares Inc [Member] Represents information and name of acquiree. Junior Subordinated Debentures Debt Instrument [Line Items] Par Debt Instrument, Face Amount Unamortized Discount Debt Instrument, Unamortized Discount Carrying value Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Effective percentage Debt Instrument, Interest Rate, Effective Percentage Floating interest rate Debt Instrument, Basis Spread on Variable Rate Securities Available for Sale Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Domain] Cumulative Effect, Period Of Adoption [Domain] [Domain] for Cumulative Effect, Period Of Adoption [Axis] Adoption of CECL Cumulative Effect, Period Of Adoption, Adoption Of Current Expected Loss Model Adjustment [Member] Cumulative Effect, Period Of Adoption, Adoption Of Current Expected Loss Model Adjustment [Member] Initial PCD ACL Cumulative Effect, Period Of Adoption, Initial Purchased Credit Deteriorated Allowance For Credit Loss Adjustment [Member] Cumulative Effect, Period Of Adoption, Initial Purchased Credit Deteriorated Allowance For Credit Loss Adjustment [Member] ACL-Loans: Financing Receivable, Allowance for Credit Loss [Roll Forward] Beginning balance Provision Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Net (charge-offs) recoveries Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery Ending balance As % of ACL-Loans Percentage Of Allowance For Loan Losses Represents percentage of allowance for loan losses. Statement of Stockholders' Equity [Abstract] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-13 Accounting Standards Update 2016-13 [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Non- controlling Interest Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Comprehensive income: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Net income Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Stock-based compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Exercise of stock options, net Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense) Issuance of common stock Stock Issued During Period, Value, New Issues Purchase and retirement of common stock Stock Repurchased and Retired During Period, Value Distribution to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Adoption of new accounting pronouncement (see Note 1) Cumulative Effect of New Accounting Principle in Period of Adoption Ending Balance Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Financing receivable Financing Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Interest receivable Interest Receivable Material loans criteria for ALLL adequacy calculation Material Loans Criteria For ACL Loans Adequacy Calculation Material Loans Criteria For ACL Loans Adequacy Calculation Number of loans classified as troubled debt Financing Receivable, Modifications, Number of Contracts Troubled debt restructuring current outstanding balance Financing Receivable, Troubled Debt Restructuring, Postmodification Pre-modification balance Financing Receivable, Troubled Debt Restructuring, Premodification Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] 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, amortization, and accretion Depreciation, Amortization and Accretion, Net Provision for credit losses Provision for Loan and Lease Losses Increase in cash surrender value of life insurance Life Insurance, Corporate or Bank Owned, Change in Value Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Asset (gains) losses, net Gain (Loss) on Disposition of Other Financial Assets Gain on sale of loans held for sale, net Gain (Loss) on Sales of Loans, Net Proceeds from sale of loans held for sale Proceeds from Sale of Loans Held-for-sale Origination of loans held for sale Payments for Origination of Mortgage Loans Held-for-sale Net change in: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable and other assets Increase Decrease In Accrued Interest Receivable And Other Assets The increase (decrease) during the reporting period in accrued interest receivable and other assets. Accrued interest payable and other liabilities Increase Decrease In Interest Payable and Other Liabilities The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity and other operating liabilities. Net cash provided by (used in) 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 (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Net (increase) decrease in certificates of deposit in other banks Increase Decrease In Certificates Of Deposit In Other Banks Represents increase decrease in certificates of deposit in other banks. Purchases of securities AFS Payments to Acquire Debt Securities, Available-for-sale Proceeds from sales of securities AFS Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from calls and maturities of securities AFS Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases of other investments Payments to Acquire Other Investments Net (increase) decrease in premises and equipment Payments for (Proceeds from) Productive Assets 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 increase (decrease) in deposits Increase (Decrease) in Deposits Net increase in short-term borrowings Proceeds from Short-term Debt Proceeds from long-term borrowings Proceeds from Issuance of Long-term Debt Repayments of long-term borrowings Repayments of Long-term Debt Purchase and retirement of common stock Payments for Repurchase of Common Stock Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Proceeds from exercise of stock options Proceeds from Stock Options Exercised Distribution to noncontrolling interest Payments to Noncontrolling Interests Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents: Cash and Cash Equivalents [Abstract] Beginning Ending Supplemental Disclosures of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for taxes Income Taxes Paid Capitalized mortgage servicing rights Servicing Asset at Fair Value, Additions Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due in less than one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due in one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Single maturity date, amortized cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Amortized cost Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due in less than one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due in one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Single maturity date, fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value Fair value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Debt Securities, Available-for-sale Shares excluded from calculation of earnings per common share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total impact for adoption of CECL Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] Allowance for Loan and Lease Losses [Roll Forward] Recoveries Allowance for credit loss on securities AFS Debt Securities, Available-for-sale, Allowance for Credit Loss Other-than-temporary impairment losses charged to earnings Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale Customer list intangibles MSR asset Mortgage Servicing Rights [Member] Represents details of mortgage servicing rights . 2020 (remaining nine months) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2025 Finite-Lived Intangible Assets, Amortization Expense, Year Six Finite-Lived Intangible Assets, Amortization Expense, Year Six Thereafter Finite-Lived Intangible Assets, Amortization Expense, After Year Six Finite-Lived Intangible Assets, Amortization Expense, After Year Six Net book value Preferred shares, no par value (in dollars per share) Preferred Stock, No Par Value Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Restricted cash and cash equivalents Restricted Cash and Cash Equivalents Restricted cash pledged as collateral on interest rate swaps Pledged Assets Separately Reported, Restricted Cash Pledged As Collateral Pledged Assets Separately Reported, Restricted Cash Pledged as Collateral Option Shares Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning balance outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Ending balance outstanding (in shares) Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning balance outstanding (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercise of stock options (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Ending balance outstanding (in usd per share) Exercisable (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average remaining life outstanding (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining life exercisable (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate intrinsic value outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Schedule of amortized cost and fair value of securities available for sale Debt Securities, Available-for-sale [Table Text Block] Schedule of unrealized losses and fair value Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of amortized cost and fair value classified by contractual maturities Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of proceeds from sale of securities AFS Schedule of Realized Gain (Loss) [Table Text Block] Long Term Incentive Plan 2011 Long Term Incentive Plan 2011 [Member] Represents information regarding long term incentive plan 2011. Number of share awards authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares were available for grant under two plans (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Shares surrendered to the Company (in shares) Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Numbers of shares surrendered (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Stock-based employee compensation Share-based Payment Arrangement, Expense Unrecognized compensation cost Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Remaining vesting period over which cost expected to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Tax benefit for impact of share based compensation Share-based Payment Arrangement, Expense, Tax Benefit Less allowance for credit losses - Loans (“ACL-Loans”) Percent of total Percentage Of Total Notes Receivable, Gross Represents the percentage of loan under each category to total loan. Allowance for credit losses - Loans to loans Percentage Of Allowance For Credit Losses To Loans Represents percentage of Allowance for credit losses to loans. Less than 12 months, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Less than 12 months, unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 months or more, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 12 months or more, unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total, fair value Debt Securities, Available-for-sale, Unrealized Loss Position Total, unrealized losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Total, number of securities Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Impairment charge on goodwill Goodwill, Impairment Loss Mortgage Servicing Rights Valuation allowance recorded during the period Valuation Allowance for Impairment of Recognized Servicing Assets, Additions for Expenses Statement of Comprehensive Income [Abstract] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains (losses) on securities AFS: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Net unrealized holding gains (losses) Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Net realized (gains) losses included in income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Income tax (expense) benefit Other Comprehensive Income (Loss), Tax Total other comprehensive income (loss) Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Stock-Based Compensation Share-based Payment Arrangement [Text Block] 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 Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Company Entity Small Business Entity Shell Company Entity Shell Company Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Goodwill and Other Intangibles and Mortgage Servicing Rights Goodwill and Intangible Assets Disclosure [Text Block] Mortgage servicing rights (MSR) asset: Servicing Asset at Fair Value, Amount [Roll Forward] MSR asset at beginning of year Servicing Asset At Amortized Cost, Before Valuation Allowance Servicing Asset At Amortized Cost, Before Valuation Allowance Capitalized MSR Servicing Asset At Amortized Value Capitalization Represents the amount related to capitalization of servicing asset. MSR asset acquired Servicing Asset at Amortized Cost, Additions Amortization during the period Amortization of Mortgage Servicing Rights (MSRs) MSR asset at end of period Valuation Allowance: Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward] Valuation allowance at beginning of year Valuation Allowance for Impairment of Recognized Servicing Assets, Balance Additions Valuation allowance at end of period MSR asset, net Servicing Asset at Amortized Cost Fair value of MSR asset at end of period Servicing Asset at Fair Value, Amount Residential mortgage loans serviced for others Residential Mortgage Loans Serviced For Others Represents information of Residential mortgage loans serviced for others. Net book value of MSR asset to loans serviced for others Net Book Value Of Msr Asset To Loans Serviced For Others Represents Net book value of MSR asset to loans serviced for others. Core deposit intangibles: Gross carrying amount Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Additions during the period Finite-lived Intangible Assets Acquired Amortization during the period Gross gains Debt Securities, Available-for-sale, Realized Gain Gross losses Debt Securities, Available-for-sale, Realized Loss Gains (losses) on sales of securities AFS, net Debt Securities, Available-for-sale, Realized Gain (Loss) Proceeds from sales of securities AFS Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] FHLB advances Federal Home Loan Bank Advances [Member] Subordinated notes Subordinated Debt [Member] Debt Instrument FHLB interest rate Federal Home Loan Bank, Advances, Interest Rate FHLB weighted average interest rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Trust preferred securities qualify as Tier1 capital Trust Preferred Securities Qualify As Tier1 Capital It represents amount of trust preferred securities qualify as Tier 1 capital. Aggregate amount of subordinated notes Note term Debt Instrument, Term Interest rate Subordinated Borrowing, Interest Rate Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Scenario, Forecast Forecast [Member] Pro Forma Pro Forma [Member] Choice Bancorp Inc. Choice Bancorp Inc. [Member] Choice Bancorp Inc. [Member] Commerce Financial Holdings, Inc. Commerce Financial Holdings, Inc. [Member] Commerce Financial Holdings, Inc. [Member] Advantage Community Bancshares, Inc. Advantage Community Bancshares, Inc. [Member] Advantage Community Bancshares, Inc. [Member] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Merger Agreement Merger Agreement [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Percentage of assets represented by acquiree Business Acquisition, Acquiree Percentage Of Acquiror's Total Assets Business Acquisition, Acquiree Percentage Of Acquiror's Total Assets Common stock issued for consideration (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Number of common stock for each outstanding share of common stock Stockholders' Equity Note, Stock Split, Conversion Ratio Value of common stock issued for consideration Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Price per share for stock issued in consideration (in dollars per share) Business Acquisition, Share Price Value of cash consideration Payments to Acquire Businesses, Gross Direct stock issuance costs for the merger charged against additional paid in capital Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Amount of addition in assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Amount of addition in loans Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Amount of addition in deposits Business Acquisition Pro Forma Deposits Represents amount of pro forma deposits for a period as if the business combination or combinations had been completed at the beginning of the period. Intangible assets assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Acquisition Goodwill, Acquired During Period Price per share for stock issued in consideration, cap (in dollars per share) Business Acquisition, Share Price, Cap Business Acquisition, Share Price, Cap Price per share for stock issued in consideration, collar (in dollars per share) Business Acquisition, Share Price, Collar Business Acquisition, Share Price, Collar Assets Loans Loans Payable Deposits Equity Goodwill: Goodwill [Roll Forward] Goodwill at beginning of year Impairment Goodwill at end of period Other investments (equity securities) Equity Securities [Member] Other investments (equity securities) Equity Securities, FV-NI Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment Impaired Financing Receivable, Recorded Investment Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Related Allowance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method General Basis of Accounting, Policy [Policy Text Block] Critical Accounting Policies and Estimates Use of Estimates, Policy [Policy Text Block] Securities Available for Sale Marketable Securities, Policy [Policy Text Block] Loans - Originated and Acquired Financing Receivable [Policy Text Block] Allowance for Credit Losses - Loans Credit Loss, Financial Instrument [Policy Text Block] Recent Accounting Developments Adopted New Accounting Pronouncements, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Allowance for credit losses - Loans Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] Earnings per Common Share Earnings Per Share [Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Cumulative-effect adjustment of adoption of ASU 2016-13 Fair Value Measurements Fair Value Disclosures [Text Block] Net income attributable to Nicolet Bankshares, Inc. Weighted average common shares outstanding (in shares) Effect of dilutive common stock awards (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted average common shares outstanding (in shares) Basic earnings per common share (in dollars per share) Diluted earnings per common share (in dollars per share) Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Grades 1- 4 Pass [Member] Grade 5 Watch [Member] Represents the credits performing in accordance with the original terms, have adequate sources of repayment and little identifiable collectability risk. Grade 6 Special Mention [Member] Grade 7 Substandard [Member] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Origination Year - 2020 Financing Receivable, Originated in Current Fiscal Year Origination Year - 2019 Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year Origination Year - 2018 Financing Receivable, Originated Two Years before Latest Fiscal Year Origination Year - 2017 Financing Receivable, Originated Three Years before Latest Fiscal Year Origination Year - 2016 Financing Receivable, Originated Four Years before Latest Fiscal Year Origination Year - Prior Financing Receivable, Originated Five or More Years before Latest Fiscal Year Revolving Financing Receivable, Revolving Revolving to Term Financing Receivable, Revolving, Converted To Term Loan Financing Receivable, Revolving, Converted to Term Loan Percent of total Percent of fixed rate long-term borrowings Long-Term Debt, Percentage Bearing Fixed Interest Rate, Percentage Long-Term Debt, Percentage Bearing Fixed Interest Rate, Percentage Percent of floating rate long-term borrowings Long-term Debt, Percentage Bearing Variable Interest Rate, Percentage Long-term Debt, Percentage Bearing Variable Interest Rate, Percentage Short and Long-Term Borrowings Debt Disclosure [Text Block] Nonaccrual loans Financing Receivable, Nonaccrual Percent of total Percentage Of Non Accrual Loan Percentage of non accrual loan under each category. Percent of total loans Financing Receivable, Percent Nonaccrual Financing Receivable, Percent Nonaccrual Schedule of goodwill and intangible assets Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of goodwill Schedule of Goodwill [Table Text Block] Schedule of other intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of mortgage servicing rights Schedule Of Mortgage Servicing Rights [Table Text Block] Represents tabular disclosure related to mortgage servicing rights. Schedule of estimated future amortization expense for amortizing intangible assets and the MSR asset Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]