3.22.2 html 794 424 1 false 135 0 false 7 false false R1.htm 0001001 - Document - Cover Page Sheet http://www.amerantbank.com/role/CoverPage Cover Page Cover 1 false false R2.htm 1001002 - Statement - Consolidated Balance Sheets Sheet http://www.amerantbank.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 1002003 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.amerantbank.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Sheet http://www.amerantbank.com/role/ConsolidatedStatementsofOperationsandComprehensiveLossIncomeUnaudited Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Statements 4 false false R5.htm 1004005 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Sheet http://www.amerantbank.com/role/ConsolidatedStatementsofChangesinStockholdersEquityUnaudited Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Statements 5 false false R6.htm 1005006 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.amerantbank.com/role/ConsolidatedStatementsofCashFlowsUnaudited Consolidated Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 2101101 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies Sheet http://www.amerantbank.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPolicies Business, Basis of Presentation and Summary of Significant Accounting Policies Notes 7 false false R8.htm 2105102 - Disclosure - Interest Earning Deposits with Banks and Restricted Cash Sheet http://www.amerantbank.com/role/InterestEarningDepositswithBanksandRestrictedCash Interest Earning Deposits with Banks and Restricted Cash Notes 8 false false R9.htm 2107103 - Disclosure - Securities Sheet http://www.amerantbank.com/role/Securities Securities Notes 9 false false R10.htm 2116104 - Disclosure - Loans Sheet http://www.amerantbank.com/role/Loans Loans Notes 10 false false R11.htm 2122105 - Disclosure - Allowance for Loan Losses Sheet http://www.amerantbank.com/role/AllowanceforLoanLosses Allowance for Loan Losses Notes 11 false false R12.htm 2129106 - Disclosure - Time Deposits Sheet http://www.amerantbank.com/role/TimeDeposits Time Deposits Notes 12 false false R13.htm 2131107 - Disclosure - Advances from the Federal Home Loan Bank Sheet http://www.amerantbank.com/role/AdvancesfromtheFederalHomeLoanBank Advances from the Federal Home Loan Bank Notes 13 false false R14.htm 2134108 - Disclosure - Senior Notes Notes http://www.amerantbank.com/role/SeniorNotes Senior Notes Notes 14 false false R15.htm 2136109 - Disclosure - Subordinated Notes Notes http://www.amerantbank.com/role/SubordinatedNotes Subordinated Notes Notes 15 false false R16.htm 2138110 - Disclosure - Junior Subordinated Debentures Held by Trust Subsidiaries Sheet http://www.amerantbank.com/role/JuniorSubordinatedDebenturesHeldbyTrustSubsidiaries Junior Subordinated Debentures Held by Trust Subsidiaries Notes 16 false false R17.htm 2141111 - Disclosure - Derivative Instruments Sheet http://www.amerantbank.com/role/DerivativeInstruments Derivative Instruments Notes 17 false false R18.htm 2146112 - Disclosure - Leases Sheet http://www.amerantbank.com/role/Leases Leases Notes 18 false false R19.htm 2151113 - Disclosure - Stock-based Incentive Compensation Plan Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlan Stock-based Incentive Compensation Plan Notes 19 false false R20.htm 2157114 - Disclosure - Income Taxes Sheet http://www.amerantbank.com/role/IncomeTaxes Income Taxes Notes 20 false false R21.htm 2159115 - Disclosure - Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) Sheet http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCI Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) Notes 21 false false R22.htm 2163116 - Disclosure - Stockholders??? Equity Sheet http://www.amerantbank.com/role/StockholdersEquity Stockholders??? Equity Notes 22 false false R23.htm 2166117 - Disclosure - Contingencies Sheet http://www.amerantbank.com/role/Contingencies Contingencies Notes 23 false false R24.htm 2169118 - Disclosure - Fair Value Measurements Sheet http://www.amerantbank.com/role/FairValueMeasurements Fair Value Measurements Notes 24 false false R25.htm 2176119 - Disclosure - Earnings Per Share Sheet http://www.amerantbank.com/role/EarningsPerShare Earnings Per Share Notes 25 false false R26.htm 2202201 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies) Sheet http://www.amerantbank.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies) Policies http://www.amerantbank.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPolicies 26 false false R27.htm 2308301 - Disclosure - Securities (Tables) Sheet http://www.amerantbank.com/role/SecuritiesTables Securities (Tables) Tables http://www.amerantbank.com/role/Securities 27 false false R28.htm 2317302 - Disclosure - Loans (Tables) Sheet http://www.amerantbank.com/role/LoansTables Loans (Tables) Tables http://www.amerantbank.com/role/Loans 28 false false R29.htm 2323303 - Disclosure - Allowance for Loan Losses (Tables) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesTables Allowance for Loan Losses (Tables) Tables http://www.amerantbank.com/role/AllowanceforLoanLosses 29 false false R30.htm 2332304 - Disclosure - Advances from the Federal Home Loan Bank (Tables) Sheet http://www.amerantbank.com/role/AdvancesfromtheFederalHomeLoanBankTables Advances from the Federal Home Loan Bank (Tables) Tables http://www.amerantbank.com/role/AdvancesfromtheFederalHomeLoanBank 30 false false R31.htm 2339305 - Disclosure - Junior Subordinated Debentures Held by Trust Subsidiaries (Tables) Sheet http://www.amerantbank.com/role/JuniorSubordinatedDebenturesHeldbyTrustSubsidiariesTables Junior Subordinated Debentures Held by Trust Subsidiaries (Tables) Tables http://www.amerantbank.com/role/JuniorSubordinatedDebenturesHeldbyTrustSubsidiaries 31 false false R32.htm 2342306 - Disclosure - Derivative Instruments (Tables) Sheet http://www.amerantbank.com/role/DerivativeInstrumentsTables Derivative Instruments (Tables) Tables http://www.amerantbank.com/role/DerivativeInstruments 32 false false R33.htm 2347307 - Disclosure - Leases (Tables) Sheet http://www.amerantbank.com/role/LeasesTables Leases (Tables) Tables http://www.amerantbank.com/role/Leases 33 false false R34.htm 2352308 - Disclosure - Stock-based Incentive Compensation Plan (Tables) Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlanTables Stock-based Incentive Compensation Plan (Tables) Tables http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlan 34 false false R35.htm 2360309 - Disclosure - Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) (Tables) Sheet http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCITables Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) (Tables) Tables http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCI 35 false false R36.htm 2367310 - Disclosure - Contingencies (Tables) Sheet http://www.amerantbank.com/role/ContingenciesTables Contingencies (Tables) Tables http://www.amerantbank.com/role/Contingencies 36 false false R37.htm 2370311 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.amerantbank.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.amerantbank.com/role/FairValueMeasurements 37 false false R38.htm 2377312 - Disclosure - Earnings Per Share (Tables) Sheet http://www.amerantbank.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://www.amerantbank.com/role/EarningsPerShare 38 false false R39.htm 2403401 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://www.amerantbank.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) Details 39 false false R40.htm 2404402 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies - Stock Repurchase Programs and Proposed Clean-Up Merger (Details) Sheet http://www.amerantbank.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesStockRepurchaseProgramsandProposedCleanUpMergerDetails Business, Basis of Presentation and Summary of Significant Accounting Policies - Stock Repurchase Programs and Proposed Clean-Up Merger (Details) Details 40 false false R41.htm 2406403 - Disclosure - Interest Earning Deposits with Banks and Restricted Cash (Details) Sheet http://www.amerantbank.com/role/InterestEarningDepositswithBanksandRestrictedCashDetails Interest Earning Deposits with Banks and Restricted Cash (Details) Details http://www.amerantbank.com/role/InterestEarningDepositswithBanksandRestrictedCash 41 false false R42.htm 2409404 - Disclosure - Securities - Amortized Cost to Fair Value of Available for Sale Securities (Details) Sheet http://www.amerantbank.com/role/SecuritiesAmortizedCosttoFairValueofAvailableforSaleSecuritiesDetails Securities - Amortized Cost to Fair Value of Available for Sale Securities (Details) Details 42 false false R43.htm 2410405 - Disclosure - Securities - Narrative (Details) Sheet http://www.amerantbank.com/role/SecuritiesNarrativeDetails Securities - Narrative (Details) Details 43 false false R44.htm 2411406 - Disclosure - Securities - Gross Realized Gains (Losses) (Details) Sheet http://www.amerantbank.com/role/SecuritiesGrossRealizedGainsLossesDetails Securities - Gross Realized Gains (Losses) (Details) Details 44 false false R45.htm 2412407 - Disclosure - Securities - Unrealized Loss on Available for Sale Securities (Details) Sheet http://www.amerantbank.com/role/SecuritiesUnrealizedLossonAvailableforSaleSecuritiesDetails Securities - Unrealized Loss on Available for Sale Securities (Details) Details 45 false false R46.htm 2413408 - Disclosure - Securities - Held to Maturity Securities - Amortized Cost (Details) Sheet http://www.amerantbank.com/role/SecuritiesHeldtoMaturitySecuritiesAmortizedCostDetails Securities - Held to Maturity Securities - Amortized Cost (Details) Details 46 false false R47.htm 2414409 - Disclosure - Securities - Held to Maturity Securities - Unrealized Losses (Details) Sheet http://www.amerantbank.com/role/SecuritiesHeldtoMaturitySecuritiesUnrealizedLossesDetails Securities - Held to Maturity Securities - Unrealized Losses (Details) Details 47 false false R48.htm 2415410 - Disclosure - Securities - Contractual Maturities on Securities (Details) Sheet http://www.amerantbank.com/role/SecuritiesContractualMaturitiesonSecuritiesDetails Securities - Contractual Maturities on Securities (Details) Details 48 false false R49.htm 2418411 - Disclosure - Loans - Loans Held for Investments (Details) Sheet http://www.amerantbank.com/role/LoansLoansHeldforInvestmentsDetails Loans - Loans Held for Investments (Details) Details 49 false false R50.htm 2419412 - Disclosure - Loans - Narrative (Details) Sheet http://www.amerantbank.com/role/LoansNarrativeDetails Loans - Narrative (Details) Details 50 false false R51.htm 2420413 - Disclosure - Loans - Loans by Delinquency (Details) Sheet http://www.amerantbank.com/role/LoansLoansbyDelinquencyDetails Loans - Loans by Delinquency (Details) Details 51 false false R52.htm 2421414 - Disclosure - Loans - Loans Held for Sale (Details) Sheet http://www.amerantbank.com/role/LoansLoansHeldforSaleDetails Loans - Loans Held for Sale (Details) Details 52 false false R53.htm 2424415 - Disclosure - Allowance for Loan Losses - Allowances by Loan Segment (Details) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesAllowancesbyLoanSegmentDetails Allowance for Loan Losses - Allowances by Loan Segment (Details) Details 53 false false R54.htm 2425416 - Disclosure - Allowance for Loan Losses - Recorded Investment of Loan Sales (Details) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesRecordedInvestmentofLoanSalesDetails Allowance for Loan Losses - Recorded Investment of Loan Sales (Details) Details 54 false false R55.htm 2426417 - Disclosure - Allowance for Loan Losses - Impaired Loans (Details) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesImpairedLoansDetails Allowance for Loan Losses - Impaired Loans (Details) Details 55 false false R56.htm 2427418 - Disclosure - Allowance for Loan Losses - TDR Loans (Details) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesTDRLoansDetails Allowance for Loan Losses - TDR Loans (Details) Details 56 false false R57.htm 2428419 - Disclosure - Allowance for Loan Losses - Credit Risk Quality (Details) Sheet http://www.amerantbank.com/role/AllowanceforLoanLossesCreditRiskQualityDetails Allowance for Loan Losses - Credit Risk Quality (Details) Details 57 false false R58.htm 2430420 - Disclosure - Time Deposits (Details) Sheet http://www.amerantbank.com/role/TimeDepositsDetails Time Deposits (Details) Details http://www.amerantbank.com/role/TimeDeposits 58 false false R59.htm 2433421 - Disclosure - Advances from the Federal Home Loan Bank (Details) Sheet http://www.amerantbank.com/role/AdvancesfromtheFederalHomeLoanBankDetails Advances from the Federal Home Loan Bank (Details) Details http://www.amerantbank.com/role/AdvancesfromtheFederalHomeLoanBankTables 59 false false R60.htm 2435422 - Disclosure - Senior Notes (Details) Notes http://www.amerantbank.com/role/SeniorNotesDetails Senior Notes (Details) Details http://www.amerantbank.com/role/SeniorNotes 60 false false R61.htm 2437423 - Disclosure - Subordinated Notes (Details) Notes http://www.amerantbank.com/role/SubordinatedNotesDetails Subordinated Notes (Details) Details http://www.amerantbank.com/role/SubordinatedNotes 61 false false R62.htm 2440424 - Disclosure - Junior Subordinated Debentures Held by Trust Subsidiaries (Details) Sheet http://www.amerantbank.com/role/JuniorSubordinatedDebenturesHeldbyTrustSubsidiariesDetails Junior Subordinated Debentures Held by Trust Subsidiaries (Details) Details http://www.amerantbank.com/role/JuniorSubordinatedDebenturesHeldbyTrustSubsidiariesTables 62 false false R63.htm 2443425 - Disclosure - Derivative Instruments - Schedule of Derivatives (Details) Sheet http://www.amerantbank.com/role/DerivativeInstrumentsScheduleofDerivativesDetails Derivative Instruments - Schedule of Derivatives (Details) Details 63 false false R64.htm 2444426 - Disclosure - Derivative Instruments - Narrative (Details) Sheet http://www.amerantbank.com/role/DerivativeInstrumentsNarrativeDetails Derivative Instruments - Narrative (Details) Details 64 false false R65.htm 2445427 - Disclosure - Derivative Instruments - Credit Risk (Details) Sheet http://www.amerantbank.com/role/DerivativeInstrumentsCreditRiskDetails Derivative Instruments - Credit Risk (Details) Details 65 false false R66.htm 2448428 - Disclosure - Leases - Additional Information (Details) Sheet http://www.amerantbank.com/role/LeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 66 false false R67.htm 2449429 - Disclosure - Leases - Cost (Details) Sheet http://www.amerantbank.com/role/LeasesCostDetails Leases - Cost (Details) Details 67 false false R68.htm 2450430 - Disclosure - Leases - Maturities (Details) Sheet http://www.amerantbank.com/role/LeasesMaturitiesDetails Leases - Maturities (Details) Details 68 false false R69.htm 2453431 - Disclosure - Stock-based Incentive Compensation Plan - Additional Information (Details) Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlanAdditionalInformationDetails Stock-based Incentive Compensation Plan - Additional Information (Details) Details 69 false false R70.htm 2454432 - Disclosure - Stock-based Incentive Compensation Plan - Restricted Stock (Details) Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlanRestrictedStockDetails Stock-based Incentive Compensation Plan - Restricted Stock (Details) Details 70 false false R71.htm 2455433 - Disclosure - Stock-based Incentive Compensation Plan - Restricted Stock Units (Details) Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlanRestrictedStockUnitsDetails Stock-based Incentive Compensation Plan - Restricted Stock Units (Details) Details 71 false false R72.htm 2456434 - Disclosure - Stock-based Incentive Compensation Plan - Restricted Stock Units, Additional Information (Details) Sheet http://www.amerantbank.com/role/StockbasedIncentiveCompensationPlanRestrictedStockUnitsAdditionalInformationDetails Stock-based Incentive Compensation Plan - Restricted Stock Units, Additional Information (Details) Details 72 false false R73.htm 2458435 - Disclosure - Income Taxes (Details) Sheet http://www.amerantbank.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://www.amerantbank.com/role/IncomeTaxes 73 false false R74.htm 2461436 - Disclosure - Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) - Components of AOCL (Details) Sheet http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCIComponentsofAOCLDetails Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) - Components of AOCL (Details) Details http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCITables 74 false false R75.htm 2462437 - Disclosure - Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) - Components of Other Comprehensive Loss (Details) Sheet http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCIComponentsofOtherComprehensiveLossDetails Accumulated Other Comprehensive (loss) Income (???AOCL/AOCI???) - Components of Other Comprehensive Loss (Details) Details http://www.amerantbank.com/role/AccumulatedOtherComprehensivelossIncomeAOCLAOCITables 75 false false R76.htm 2464438 - Disclosure - Stockholders??? Equity - Common Stock (Details) Sheet http://www.amerantbank.com/role/StockholdersEquityCommonStockDetails Stockholders??? Equity - Common Stock (Details) Details 76 false false R77.htm 2465439 - Disclosure - Stockholders??? Equity - Dividends (Details) Sheet http://www.amerantbank.com/role/StockholdersEquityDividendsDetails Stockholders??? Equity - Dividends (Details) Details 77 false false R78.htm 2468440 - Disclosure - Contingencies (Details) Sheet http://www.amerantbank.com/role/ContingenciesDetails Contingencies (Details) Details http://www.amerantbank.com/role/ContingenciesTables 78 false false R79.htm 2471441 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) Sheet http://www.amerantbank.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) Details 79 false false R80.htm 2472442 - Disclosure - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) Sheet http://www.amerantbank.com/role/FairValueMeasurementsAssetsMeasuredatFairValueonaNonrecurringBasisDetails Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) Details 80 false false R81.htm 2473443 - Disclosure - Fair Value Measurements - Quantitative Information about Significant Unobservable Inputs Used in Fair Value Measurements (Details) Sheet http://www.amerantbank.com/role/FairValueMeasurementsQuantitativeInformationaboutSignificantUnobservableInputsUsedinFairValueMeasurementsDetails Fair Value Measurements - Quantitative Information about Significant Unobservable Inputs Used in Fair Value Measurements (Details) Details 81 false false R82.htm 2474444 - Disclosure - Fair Value Measurements - Narrative (Details) Sheet http://www.amerantbank.com/role/FairValueMeasurementsNarrativeDetails Fair Value Measurements - Narrative (Details) Details 82 false false R83.htm 2475445 - Disclosure - Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differs from Carrying Value (Details) Sheet http://www.amerantbank.com/role/FairValueMeasurementsSummaryofFinancialInstrumentsWhereFairValueDiffersfromCarryingValueDetails Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differs from Carrying Value (Details) Details 83 false false R84.htm 2478446 - Disclosure - Earnings Per Share (Details) Sheet http://www.amerantbank.com/role/EarningsPerShareDetails Earnings Per Share (Details) Details http://www.amerantbank.com/role/EarningsPerShareTables 84 false false All Reports Book All Reports amtb-20220630.htm amtb-20220630.xsd amtb-20220630_cal.xml amtb-20220630_def.xml amtb-20220630_lab.xml amtb-20220630_pre.xml ex31106302022.htm ex31206302022.htm ex32106302022.htm ex32206302022.htm amtb-20220630_g1.jpg http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true