Allegiance Bancshares, Inc.

$ Overview Financials Valuation SEC Filings Company Website

2022 Q3 Form 10-Q Financial Statement

#000164208122000050 Filed on July 29, 2022

Income Statement

Concept	2022 Q3	2022 Q2	2022 Q1

Balance Sheet

Concept	2022 Q2	2022 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$292.8M	$699.4M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$58.48M	$62.17M
YoY Change	-10.58%	-5.97%
Goodwill	$223.6M	$223.6M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$6.732B	$7.149B
YoY Change	3.43%	11.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.500M	$3.100M
YoY Change	-21.05%	-20.51%
Accrued Expenses	$8.889M	$9.700M
YoY Change	-18.45%	-14.91%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$10.39M	$12.80M
YoY Change	-18.84%	-16.34%
LONG-TERM LIABILITIES
Long-Term Debt	$109.1M	$198.9M
YoY Change	-56.09%	-22.3%
Other Long-Term Liabilities	$26.31M	$23.40M
YoY Change	6.07%	-6.4%
Total Long-Term Liabilities	$135.4M	$222.3M
YoY Change	-50.45%	-20.89%
TOTAL LIABILITIES
Total Short-Term Liabilities	$10.39M	$12.80M
Total Long-Term Liabilities	$135.4M	$222.3M
Total Liabilities	$6.026B	$6.397B
YoY Change	5.37%	12.82%
SHAREHOLDERS EQUITY
Retained Earnings	$296.5M	$282.9M
YoY Change		34.18%
Common Stock	$20.15M	$20.38M
YoY Change		0.97%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$705.3M	$751.9M
YoY Change
Total Liabilities & Shareholders Equity	$6.732B	$7.149B
YoY Change	3.43%	11.17%

Cashflow Statement

Concept	2022 Q3	2022 Q2	2022 Q1

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001642081
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentNet
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentNet
CY2022Q2	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilities
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilities
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-37585
	dei	Entity Registrant Name EntityRegistrantName	Allegiance Bancshares, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TX
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	26-3564100
	dei	Entity Address Address Line1 EntityAddressAddressLine1	8847 West Sam Houston Parkway, N.
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 200
	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77040
	dei	City Area Code CityAreaCode	281
	dei	Local Phone Number LocalPhoneNumber	894-3200
	dei	Security12b Title Security12bTitle	Common Stock, par value, $1.00 per share
	dei	Trading Symbol TradingSymbol	ABTX
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2022Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	19960155	shares
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CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	23961000	usd
CY2022Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	275290000	usd
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CY2022Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	292837000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	757509000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1709321000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1773765000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4348833000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4220486000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50242000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	47940000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4298591000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4172546000	usd
CY2022Q2	us-gaap	Interest Receivable InterestReceivable	29882000	usd
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	33392000	usd
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CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63708000	usd
CY2022Q2	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	4078000	usd
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CY2022Q2	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	28170000	usd
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	28240000	usd
CY2022Q2	us-gaap	Goodwill Goodwill	223642000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	223642000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	13156000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14658000	usd
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CY2021Q4	us-gaap	Assets Assets	7104954000	usd
CY2022Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2394719000	usd
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CY2022Q2	us-gaap	Demand Deposit Accounts DemandDepositAccounts	1016381000	usd
CY2021Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	869984000	usd
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CY2022Q2	us-gaap	Time Deposits TimeDeposits	959524000	usd
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CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	3804554000	usd
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CY2022Q2	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1500000	usd
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1753000	usd
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CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	40291000	usd
CY2022Q2	us-gaap	Liabilities Liabilities	6026435000	usd
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CY2022Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
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	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	135000	usd
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CY2022Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
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CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
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	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1217000	usd
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	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	125660000	usd
CY2022Q2	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	1859000	usd
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CY2021Q2	us-gaap	Professional Fees ProfessionalFees	608000	usd
	us-gaap	Professional Fees ProfessionalFees	800000	usd
	us-gaap	Professional Fees ProfessionalFees	1397000	usd
CY2022Q2	abtx	Regulatory Assessments And Fdic Insurance RegulatoryAssessmentsAndFDICInsurance	1256000	usd
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CY2022Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	751000	usd
CY2021Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	824000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1502000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1648000	usd
CY2022Q2	us-gaap	Communication Communication	363000	usd
CY2021Q2	us-gaap	Communication Communication	332000	usd
	us-gaap	Communication Communication	704000	usd
	us-gaap	Communication Communication	653000	usd
CY2022Q2	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	483000	usd
CY2021Q2	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	432000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	945000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	730000	usd
CY2022Q2	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-65000	usd
CY2021Q2	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-229000	usd
	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-124000	usd
	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-342000	usd
CY2022Q2	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	1667000	usd
CY2021Q2	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	usd
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	2118000	usd
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	usd
CY2022Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5039000	usd
CY2021Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2472000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	7629000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	6163000	usd
CY2022Q2	us-gaap	Noninterest Expense NoninterestExpense	37904000	usd
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	33595000	usd
	us-gaap	Noninterest Expense NoninterestExpense	72421000	usd
	us-gaap	Noninterest Expense NoninterestExpense	68514000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20139000	usd
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	27953000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42998000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	49829000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3702000	usd
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.01
CY2022Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.14
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5028000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7904000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8894000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16437000	usd
CY2021Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	22925000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35094000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	40935000	usd
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.13
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.72
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.03
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2021Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.12
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.28
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.24
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	16437000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	22925000	usd
	us-gaap	Net Income Loss NetIncomeLoss	35094000	usd
	us-gaap	Net Income Loss NetIncomeLoss	40935000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-65648000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	8902000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-169269000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-5808000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-17000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-17000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	49000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	-347000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	1477000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	225000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	225000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-65631000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	8330000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-169252000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-4605000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-13782000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1749000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-35543000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-968000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-51849000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6581000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-133709000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3637000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-35412000	usd
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	29506000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-98615000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	37298000	usd
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	760537000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	22925000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6581000	usd
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2021Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2426000	usd
CY2021Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	494000	usd
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1039000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	789150000	usd
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	751940000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	16437000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-51849000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.14
CY2022Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2856000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	416000	usd
CY2022Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9690000	usd
CY2022Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	931000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	705329000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	758669000	usd
	us-gaap	Net Income Loss NetIncomeLoss	40935000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3637000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	4838000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1821000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	5659000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1859000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	789150000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	816468000	usd
	us-gaap	Net Income Loss NetIncomeLoss	35094000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-133709000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5709000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	985000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9690000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1890000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	705329000	usd
	us-gaap	Net Income Loss NetIncomeLoss	35094000	usd
	us-gaap	Net Income Loss NetIncomeLoss	40935000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3547000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3739000	usd
	abtx	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	3957000	usd
	abtx	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-2040000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-97000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-449000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5558000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3162000	usd
	abtx	Excess Tax Benefit From Stock Based Compensation ExcessTaxBenefitFromStockBasedCompensation	154000	usd
	abtx	Excess Tax Benefit From Stock Based Compensation ExcessTaxBenefitFromStockBasedCompensation	262000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	475000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	290000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Loans AccretionAmortizationOfDiscountsAndPremiumsLoans	139000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Loans AccretionAmortizationOfDiscountsAndPremiumsLoans	262000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Subordinated Debt AccretionAmortizationOfDiscountsAndPremiumsSubordinatedDebt	-58000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Subordinated Debt AccretionAmortizationOfDiscountsAndPremiumsSubordinatedDebt	-57000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Certificates Of Deposit AccretionAmortizationOfDiscountsAndPremiumsCertificatesOfDeposit	31000	usd
	abtx	Accretion Amortization Of Discounts And Premiums Certificates Of Deposit AccretionAmortizationOfDiscountsAndPremiumsCertificatesOfDeposit	99000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-176000	usd
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	usd
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	1317000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-17000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	49000	usd
	abtx	Federal Home Loan Bank Stock Dividends FederalHomeLoanBankStockDividends	35000	usd
	abtx	Federal Home Loan Bank Stock Dividends FederalHomeLoanBankStockDividends	36000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	1890000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	1859000	usd
	abtx	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	1515000	usd
	abtx	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	1428000	usd
	abtx	Increase Decrease In Accrued Interest Receivable And Other Assets IncreaseDecreaseInAccruedInterestReceivableAndOtherAssets	4153000	usd
	abtx	Increase Decrease In Accrued Interest Receivable And Other Assets IncreaseDecreaseInAccruedInterestReceivableAndOtherAssets	5292000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-5694000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	83000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	40858000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	43977000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2283396000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2428915000	usd
	abtx	Proceeds From Sales And Calls Of Available For Sale Securities ProceedsFromSalesAndCallsOfAvailableForSaleSecurities	4898000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2398416000	usd
	abtx	Proceeds From Sales And Calls Of Available For Sale Securities ProceedsFromSalesAndCallsOfAvailableForSaleSecurities	5056000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2646763000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	129096000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-38790000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	395000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2016000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	430000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-5315000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	442000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-234140000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-176188000	usd
	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	151634000	usd
	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	268475000	usd
	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	-318610000	usd
	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	176500000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-90000000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	0	usd
	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	0	usd
	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-15569000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5709000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	4838000	usd
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	985000	usd
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	1821000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9690000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5659000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-271390000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	420730000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-464672000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	288519000	usd
	abtx	Branch Assets Transferred To Held For Sale BranchAssetsTransferredToHeldForSale	2137000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	757509000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	422766000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	292837000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	711285000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	6900000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	13500000	usd
	us-gaap	Interest Paid Net InterestPaidNet	10742000	usd
	us-gaap	Interest Paid Net InterestPaidNet	14127000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	1723000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	1728000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	76000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	502000	usd
	abtx	Loans Transferred To Other Real Estate LoansTransferredToOtherRealEstate	0	usd
	abtx	Loans Transferred To Other Real Estate LoansTransferredToOtherRealEstate	821000	usd
	abtx	Other Real Estate Transferred To Loans OtherRealEstateTransferredToLoans	0	usd
	abtx	Other Real Estate Transferred To Loans OtherRealEstateTransferredToLoans	8125000	usd
	abtx	Branch Assets Transferred To Held For Sale BranchAssetsTransferredToHeldForSale	0	usd
CY2022Q2	abtx	Number Of Offices In Which Entity Operates NumberOfOfficesInWhichEntityOperates	26	office
CY2022Q2	abtx	Number Of Banks In Which Entity Operates NumberOfBanksInWhichEntityOperates	25	office
CY2021Q4	abtx	Merger Shares Consideration Received Ratio MergerSharesConsiderationReceivedRatio	1.4184	shares
CY2020Q4	us-gaap	Goodwill Goodwill	223642000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	223642000	usd
CY2022Q2	us-gaap	Goodwill Goodwill	223642000	usd
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	1501000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2323000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2188000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2061000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1941000	usd
CY2022Q2	abtx	Finite Lived Intangible Assets Amortization Expense After Year Four FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour	3142000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	13156000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1855471000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1805000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	147955000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1709321000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1750663000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	37920000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	14818000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1773765000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	5505000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	5519000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	268365000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	255109000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	168852000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	162684000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	583241000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	546272000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	1025963000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	969584000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	829508000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	739737000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1855471000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1709321000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1368528000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	128422000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	165898000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	19533000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1534426000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	147955000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	996300000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	13302000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	45882000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1516000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1042182000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	14818000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q2	abtx	Number Of Securities Called During Period NumberOfSecuritiesCalledDuringPeriod	1	calledsecurity
CY2022Q2	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-17000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4900000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	49000	usd
CY2021Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q2	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	452900000	usd
CY2021Q4	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	258800000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4348833000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4220486000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50242000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	47940000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4298591000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4172546000	usd
CY2022Q2	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	21800000	usd
CY2021Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	26000000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	28225000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4348833000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	24127000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4220486000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	941403000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1411259000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	677480000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	342274000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	217481000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	259686000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	497064000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	2186000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4348833000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4220486000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	49215000	usd
CY2022Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1598000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	687000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	116000	usd
CY2022Q2	abtx	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-571000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50242000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	47940000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3190000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1394000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	506000	usd
	abtx	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-888000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50242000	usd
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	52758000	usd
CY2021Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3010000	usd
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	180000	usd
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	18000	usd
CY2021Q2	abtx	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-162000	usd
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	49586000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	53173000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3080000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	584000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	77000	usd
	abtx	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-507000	usd
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	49586000	usd
CY2022Q2	abtx	Financing Receivable Excluding Accrued Interest Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Collateral Dependent FinancingReceivableExcludingAccruedInterestFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCollateralDependent	15131000	usd
CY2021Q4	abtx	Financing Receivable Excluding Accrued Interest Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Collateral Dependent FinancingReceivableExcludingAccruedInterestFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCollateralDependent	16568000	usd
CY2022Q2	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	22803000	usd
CY2022Q2	abtx	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	5422000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	28225000	usd
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	13387000	usd
CY2021Q4	abtx	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	10740000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	24127000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	18600000	usd
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	19200000	usd
CY2022Q2	abtx	Financing Receivable Troubled Debt Restructuring Allowance For Credit Loss FinancingReceivableTroubledDebtRestructuringAllowanceForCreditLoss	1400000	usd
CY2021Q4	abtx	Financing Receivable Troubled Debt Restructuring Allowance For Credit Loss FinancingReceivableTroubledDebtRestructuringAllowanceForCreditLoss	1900000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	contract
CY2022Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	544000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	544000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	contract
CY2021Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	805000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	805000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7	contract
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1751000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1751000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	contract
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1350000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1350000	usd
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	usd
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	21000	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1	contract
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	59000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1800000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1400000	usd
	abtx	Number Of Leased Branch Locations And Office Space Along With Equipment NumberOfLeasedBranchLocationsAndOfficeSpaceAlongWithEquipment	17	lease
CY2021Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	860000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	1723000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	1733000	usd
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8757000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	10196000	usd
CY2022Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	8889000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	10370000	usd
CY2022Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M21D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y11M19D
CY2022Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0260
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0262
CY2022Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	831000	usd
CY2022Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	usd
CY2021Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	16000	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	31000	usd
CY2022Q2	us-gaap	Sublease Income SubleaseIncome	0	usd
CY2021Q2	us-gaap	Sublease Income SubleaseIncome	18000	usd
	us-gaap	Sublease Income SubleaseIncome	0	usd
	us-gaap	Sublease Income SubleaseIncome	36000	usd
CY2022Q2	us-gaap	Lease Cost LeaseCost	831000	usd
CY2021Q2	us-gaap	Lease Cost LeaseCost	858000	usd
	us-gaap	Lease Cost LeaseCost	1723000	usd
	us-gaap	Lease Cost LeaseCost	1728000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1312000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	2951000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2362000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2350000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1904000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1892000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1378000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1366000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	907000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	894000	usd
CY2022Q2	abtx	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	1586000	usd
CY2021Q4	abtx	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	1594000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	9449000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	11047000	usd
CY2022Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	560000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	677000	usd
CY2022Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	8889000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	10370000	usd
CY2022Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	484600000	usd
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	707500000	usd
CY2022Q2	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	753201000	usd
CY2022Q2	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	111528000	usd
CY2022Q2	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	37500000	usd
CY2022Q2	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	29214000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5000000	usd
CY2022Q2	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	28081000	usd
CY2022Q2	us-gaap	Time Deposits TimeDeposits	959524000	usd
CY2022Q2	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	82500000	usd
CY2021Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	306400000	usd
CY2022Q2	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	11341000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3700000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7900000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8900000	usd
CY2022Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.184
CY2021Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.180
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.178
	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	usd
	abtx	Number Of Stock Based Employee Compensation Plans NumberOfStockBasedEmployeeCompensationPlans	2	compensationplan
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3200000	shares
CY2022Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	931000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1900000	usd
CY2021Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1000000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1900000	usd
	abtx	Commitments To Make Loans Period CommitmentsToMakeLoansPeriod	P120D
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3326000	usd
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	223000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	283000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.74
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y10M24D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5508000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	49000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	22.92
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	14000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	23.21
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	220000	shares
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.67
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y5M26D
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	22.83
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y5M26D
CY2022Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	3326000	usd
CY2022Q2	abtx	Offbalance Sheet Financial Instrument Fixed Rate Contractual Amount OffbalanceSheetFinancialInstrumentFixedRateContractualAmount	572878000	usd
CY2022Q2	abtx	Offbalance Sheet Financial Instrument Variable Rate Contractual Amount OffbalanceSheetFinancialInstrumentVariableRateContractualAmount	648787000	usd
CY2021Q4	abtx	Offbalance Sheet Financial Instrument Fixed Rate Contractual Amount OffbalanceSheetFinancialInstrumentFixedRateContractualAmount	492977000	usd
CY2021Q4	abtx	Offbalance Sheet Financial Instrument Variable Rate Contractual Amount OffbalanceSheetFinancialInstrumentVariableRateContractualAmount	619730000	usd
CY2022Q2	abtx	Off Balance Sheet Credit Loss Liability Allowance For Credit Loss OffBalanceSheetCreditLossLiabilityAllowanceForCreditLoss	6100000	usd
CY2021Q4	abtx	Off Balance Sheet Credit Loss Liability Allowance For Credit Loss OffBalanceSheetCreditLossLiabilityAllowanceForCreditLoss	5300000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5520000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	544000	usd
CY2022Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	6064000	usd
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5298000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	766000	usd
CY2021Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	6064000	usd
CY2021Q4	abtx	Capital Conservation Buffer CapitalConservationBuffer	0.025
CY2022Q2	abtx	Capital Conservation Buffer CapitalConservationBuffer	0.025
CY2022Q2	us-gaap	Capital Capital	749413000	usd
CY2022Q2	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1547
CY2022Q2	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	387425000	usd
CY2022Q2	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2022Q2	us-gaap	Excess Capital ExcessCapital	508495000	usd
CY2022Q2	us-gaap	Excess Capital To Risk Weighted Assets ExcessCapitalToRiskWeightedAssets	0.1050
CY2021Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2022Q2	abtx	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	583998000	usd
CY2022Q2	abtx	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1206
CY2022Q2	abtx	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	217926000	usd
CY2022Q2	abtx	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeighted	0.0450
CY2022Q2	abtx	Excess Common Equity Tier One Risk Based Capital ExcessCommonEquityTierOneRiskBasedCapital	338997000	usd
CY2022Q2	abtx	Excess Common Equity Tier One Risk Based Capitalto Risk Weighted Assets ExcessCommonEquityTierOneRiskBasedCapitaltoRiskWeightedAssets	0.0700
CY2022Q2	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	593808000	usd
CY2022Q2	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1226
CY2022Q2	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	290568000	usd
CY2022Q2	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2022Q2	us-gaap	Excess Tier One Risk Based Capital ExcessTierOneRiskBasedCapital	411639000	usd
CY2022Q2	us-gaap	Excess Tier One Risk Based Capital To Risk Weighted Assets ExcessTierOneRiskBasedCapitalToRiskWeightedAssets	0.0850
CY2022Q2	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	593808000	usd
CY2021Q4	abtx	Excess Common Equity Tier One Risk Based Capital ExcessCommonEquityTierOneRiskBasedCapital	314312000	usd
CY2022Q2	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0865
CY2022Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	274625000	usd
CY2022Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2022Q2	us-gaap	Excess Tier One Leverage Capital ExcessTierOneLeverageCapital	274625000	usd
CY2022Q2	us-gaap	Excess Tier One Leverage Capital To Average Assets ExcessTierOneLeverageCapitalToAverageAssets	0.0400
CY2021Q4	us-gaap	Capital Capital	722010000	usd
CY2021Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1608
CY2021Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	359214000	usd
CY2021Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2021Q4	us-gaap	Excess Capital ExcessCapital	471468000	usd
CY2021Q4	us-gaap	Excess Capital To Risk Weighted Assets ExcessCapitalToRiskWeightedAssets	0.1050
CY2021Q4	abtx	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	559926000	usd
CY2021Q4	abtx	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1247
CY2021Q4	abtx	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	202058000	usd
CY2021Q4	abtx	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeighted	0.0450
CY2021Q4	abtx	Excess Common Equity Tier One Risk Based Capitalto Risk Weighted Assets ExcessCommonEquityTierOneRiskBasedCapitaltoRiskWeightedAssets	0.0700
CY2021Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	569678000	usd
CY2021Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1269
CY2021Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	269410000	usd
CY2021Q4	us-gaap	Excess Tier One Risk Based Capital ExcessTierOneRiskBasedCapital	381665000	usd
CY2021Q4	us-gaap	Excess Tier One Risk Based Capital To Risk Weighted Assets ExcessTierOneRiskBasedCapitalToRiskWeightedAssets	0.0850
CY2021Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	569678000	usd
CY2021Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0853
CY2021Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	267286000	usd
CY2021Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2021Q4	us-gaap	Excess Tier One Leverage Capital ExcessTierOneLeverageCapital	267286000	usd
CY2021Q4	us-gaap	Excess Tier One Leverage Capital To Average Assets ExcessTierOneLeverageCapitalToAverageAssets	0.0400
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	16437000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	22925000	usd
	us-gaap	Net Income Loss NetIncomeLoss	35094000	usd
	us-gaap	Net Income Loss NetIncomeLoss	40935000	usd
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20357000	shares
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20203000	shares
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.13
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20360000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.72
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20171000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.03
CY2022Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	173000	shares
CY2021Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	183000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	162000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	188000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20530000	shares
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20386000	shares
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20522000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20359000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.01

Files In Submission

Name	View Source	Status
0001642081-22-000050-index-headers.html	Edgar Link	pending
0001642081-22-000050-index.html	Edgar Link	pending
0001642081-22-000050.txt	Edgar Link	pending
0001642081-22-000050-xbrl.zip	Edgar Link	pending
abtx-20220630.htm	Edgar Link	pending
abtx-20220630.xsd	Edgar Link	pending
abtx-20220630_cal.xml	Edgar Link	unprocessable
abtx-20220630_def.xml	Edgar Link	unprocessable
abtx-20220630_htm.xml	Edgar Link	completed
abtx-20220630_lab.xml	Edgar Link	unprocessable
abtx-20220630_pre.xml	Edgar Link	unprocessable
abtx2022063010qex311.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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Allegiance Bancshares, Inc.

2022 Q3 Form 10-Q Financial Statement

#000164208122000050 Filed on July 29, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission