$FFIN
FIRST FINANCIAL BANKSHARES INC Stock $ffin

$ffin Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000095017024052911 Filed on May 03, 2024

Income Statement

Concept	2024 Q2	2024 Q1	2023 Q1
Revenue	$153.7M	$149.5M	$121.5M
YoY Change	19.12%	23.03%	25.25%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.231M	$3.221M	$3.074M
YoY Change	1.16%	4.78%	-3.94%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$50.40M	$49.25M	$25.22M
YoY Change	52.09%	95.28%	1506.5%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$63.64M	$64.88M	$64.26M
YoY Change	1.62%	0.97%	-3.1%
Income Tax	$11.16M	$11.48M	$11.69M
% Of Pretax Income	17.53%	17.7%	18.19%
Net Earnings	$52.49M	$53.40M	$52.57M
YoY Change	3.17%	1.58%	-6.08%
Net Earnings / Revenue	34.15%	35.72%	43.26%
Basic Earnings Per Share	$0.37	$0.37	$0.37
Diluted Earnings Per Share	$0.37	$0.37	$0.37
COMMON SHARES
Basic Shares Outstanding	142.8M	142.8M	142.7M
Diluted Shares Outstanding	143.1M	143.0M	143.1M

Balance Sheet

Concept	2024 Q2	2024 Q1	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$369.4M	$600.2M	$446.2M
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	$153.1M	$152.0M	$153.7M
YoY Change	0.13%	-1.15%	2.36%
Goodwill
YoY Change
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	$13.16B	$13.19B	$13.01B
YoY Change	2.64%	1.41%	-2.3%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$0.00
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$162.7M	$26.80M	$632.9M
YoY Change	-72.32%	-95.77%	-16.57%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$162.7M	$334.1M	$657.2M
YoY Change	-72.32%	-49.16%	3029.53%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$73.24M	$75.88M	$41.51M
YoY Change	16.27%	82.79%	-9.75%
Total Long-Term Liabilities	$73.24M	$75.88M	$41.51M
YoY Change	16.27%	82.79%	-9.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$162.7M	$334.1M	$657.2M
Total Long-Term Liabilities	$73.24M	$75.88M	$41.51M
Total Liabilities	$11.65B	$11.70B	$11.64B
YoY Change	1.63%	0.56%	-1.61%
SHAREHOLDERS EQUITY
Retained Earnings	$1.274B	$1.247B	$1.150B
YoY Change	8.38%	8.43%	13.19%
Common Stock	$686.6M	$685.4M	$680.9M
YoY Change	0.66%	0.67%	-0.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.519B	$1.491B	$1.373B
YoY Change
Total Liabilities & Shareholders Equity	$13.16B	$13.19B	$13.01B
YoY Change	2.64%	1.41%	-2.3%

Cashflow Statement

Concept	2024 Q2	2024 Q1	2023 Q1
OPERATING ACTIVITIES
Net Income	$52.49M	$53.40M	$52.57M
YoY Change	3.17%	1.58%	-6.08%
Depreciation, Depletion And Amortization	$3.231M	$3.221M	$3.074M
YoY Change	1.16%	4.78%	-3.94%
Cash From Operating Activities	$68.81M	$75.64M	$95.89M
YoY Change	20.53%	-21.11%	10.62%
INVESTING ACTIVITIES
Capital Expenditures	$4.980M	$3.912M	$6.347M
YoY Change	90.15%	-38.36%	-298.34%
Acquisitions
YoY Change
Other Investing Activities	-$216.9M	-$65.60M	$128.0M
YoY Change	817.45%	-151.24%	-124.78%
Cash From Investing Activities	-$221.9M	-$69.51M	$121.7M
YoY Change	744.92%	-157.13%	-123.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-77.69M	57.44M	-102.0M
YoY Change	-60.8%	-156.3%	-120.31%
NET CHANGE
Cash From Operating Activities	68.81M	75.64M	95.89M
Cash From Investing Activities	-221.9M	-69.51M	121.7M
Cash From Financing Activities	-77.69M	57.44M	-102.0M
Net Change In Cash	-230.8M	63.57M	115.5M
YoY Change	37.9%	-44.98%	67.04%
FREE CASH FLOW
Cash From Operating Activities	$68.81M	$75.64M	$95.89M
Capital Expenditures	$4.980M	$3.912M	$6.347M
Free Cash Flow	$63.83M	$71.73M	$89.54M
YoY Change	17.18%	-19.89%	-0.38%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2024Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2024Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2024Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000036029
CY2024Q1	dei	Amendment Flag AmendmentFlag	false
CY2024Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2023Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2024Q1	dei	Document Type DocumentType	10-Q
CY2024Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2024Q1	dei	Document Period End Date DocumentPeriodEndDate	2024-03-31
CY2024Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2024Q1	dei	Entity File Number EntityFileNumber	0-07674
CY2024Q1	dei	Entity Registrant Name EntityRegistrantName	First Financial Bankshares, Inc.
CY2024Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TX
CY2024Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	75-0944023
CY2024Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	400 Pine Street
CY2024Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Abilene
CY2024Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2024Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	79601
CY2024Q1	dei	City Area Code CityAreaCode	325
CY2024Q1	dei	Local Phone Number LocalPhoneNumber	627-7155
CY2024Q1	dei	Security12b Title Security12bTitle	Common Stock
CY2024Q1	dei	Trading Symbol TradingSymbol	FFIN
CY2024Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2024Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2024Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2024Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2024Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2024Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2024Q1	dei	Entity Shell Company EntityShellCompany	false
CY2024Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	142841009
CY2024Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	222464000
CY2023Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	224875000
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	281354000
CY2024Q1	us-gaap	Federal Funds Sold FederalFundsSold	12300000
CY2023Q1	us-gaap	Federal Funds Sold FederalFundsSold	0
CY2023Q4	us-gaap	Federal Funds Sold FederalFundsSold	0
CY2024Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	365397000
CY2023Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	221336000
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	255237000
CY2024Q1	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	600161000
CY2023Q1	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	446211000
CY2023Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	536591000
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5217517000
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5879040000
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5243681000
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4658526000
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5298557000
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4732762000
CY2024Q1	ffin	Held For Investment Excluding Ppp Loans HeldForInvestmentExcludingPPPLoans	7229410000
CY2023Q1	ffin	Held For Investment Excluding Ppp Loans HeldForInvestmentExcludingPPPLoans	6576215000
CY2023Q4	ffin	Held For Investment Excluding Ppp Loans HeldForInvestmentExcludingPPPLoans	7148791000
CY2024Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	89562000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	80818000
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	88734000
CY2024Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7139848000
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6495397000
CY2023Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7060057000
CY2024Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	15080000
CY2023Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	11766000
CY2023Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	11077000
CY2024Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	16109000
CY2023Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	11996000
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	14253000
CY2024Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	151953000
CY2023Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	153718000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	151788000
CY2024Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	314465000
CY2023Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	315306000
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CY2024Q1	us-gaap	Assets Assets	13191158000
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CY2024Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7941661000
CY2023Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7045427000
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7702714000
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CY2023Q4	us-gaap	Deposits Deposits	11138300000
CY2024Q1	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	25754000
CY2023Q1	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	24274000
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	25712000
CY2024Q1	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	307297000
CY2023Q1	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	608299000
CY2023Q4	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	381928000
CY2024Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	26803000
CY2023Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	24628000
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	22153000
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CY2023Q1	us-gaap	Other Liabilities OtherLiabilities	41514000
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	38601000
CY2024Q1	us-gaap	Liabilities Liabilities	11699791000
CY2023Q1	us-gaap	Liabilities Liabilities	11635133000
CY2023Q4	us-gaap	Liabilities Liabilities	11606694000
CY2024Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2024Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000
CY2023Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000
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CY2024Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	142817159
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CY2023Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1150246000
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1219525000
CY2024Q1	ffin	Number Of Common Shares Acquired In Connection With Directors Deferred Compensation Plan NumberOfCommonSharesAcquiredInConnectionWithDirectorsDeferredCompensationPlan	931427
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CY2023Q4	ffin	Number Of Common Shares Acquired In Connection With Directors Deferred Compensation Plan NumberOfCommonSharesAcquiredInConnectionWithDirectorsDeferredCompensationPlan	930152
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CY2023Q1	ffin	Credit Card Fees CreditCardFees	609000
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CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Gain Loss DebtSecuritiesAvailableForSaleUnrealizedGainLoss	12000
CY2024Q1	ffin	Net Gain Loss On Sale Of Foreclosed Assets NetGainLossOnSaleOfForeclosedAssets	0
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CY2023Q1	us-gaap	Occupancy Net OccupancyNet	3430000
CY2024Q1	us-gaap	Equipment Expense EquipmentExpense	2237000
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CY2024Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1965000
CY2023Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1654000
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CY2023Q1	ffin	Debit Card Expense DebitCardExpense	3199000
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CY2023Q1	ffin	Professional And Service Fees ProfessionalAndServiceFees	2365000
CY2024Q1	ffin	Printing Stationery And Supplies PrintingStationeryAndSupplies	447000
CY2023Q1	ffin	Printing Stationery And Supplies PrintingStationeryAndSupplies	710000
CY2024Q1	ffin	Operational And Other Losses OperationalAndOtherLosses	1154000
CY2023Q1	ffin	Operational And Other Losses OperationalAndOtherLosses	931000
CY2024Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	3005000
CY2023Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	2311000
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	157000
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	228000
CY2024Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	9368000
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8840000
CY2024Q1	us-gaap	Noninterest Expense NoninterestExpense	63940000
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	57256000
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	64877000
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	64256000
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11480000
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11688000
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	53397000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	52568000
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.17
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	53397000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	52568000
CY2024Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-48011000
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	97454000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	12000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-48011000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	97442000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	-10082000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	20466000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	3000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-10082000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	20463000
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15468000
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	129547000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1265737000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	52568000
CY2023Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	884000
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24267000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	76979000
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	952000
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	1372853000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1498900000
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	53397000
CY2024Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1623000
CY2024Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	25753000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-37929000
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	1129000
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	1491367000
CY2024Q1	us-gaap	Profit Loss ProfitLoss	53397000
CY2023Q1	us-gaap	Profit Loss ProfitLoss	52568000
CY2024Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	3221000
CY2023Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	3074000
CY2024Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	808000
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2781000
CY2024Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-11153000
CY2023Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-13770000
CY2024Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	0
CY2023Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	976000
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	1129000
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	952000
CY2024Q1	ffin	Net Tax Benefit From Stock Based Compensation NetTaxBenefitFromStockBasedCompensation	-102000
CY2023Q1	ffin	Net Tax Benefit From Stock Based Compensation NetTaxBenefitFromStockBasedCompensation	-93000
CY2024Q1	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	1797000
CY2023Q1	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-48000
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4245000
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-15851000
CY2024Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	11875000
CY2023Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	7755000
CY2024Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	22246000
CY2023Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	43348000
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	75643000
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	95916000
CY2024Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	145948000
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3644519000
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	116922000
CY2024Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3629507000
CY2023Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3298000
CY2024Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	80652000
CY2023Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	133974000
CY2024Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3912000
CY2023Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	6347000
CY2024Q1	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	41000
CY2023Q1	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	2423000
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-69511000
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	121674000
CY2024Q1	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	-87439000
CY2023Q1	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	-170797000
CY2024Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	238947000
CY2023Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	101708000
CY2024Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-69981000
CY2023Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-9581000
CY2024Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1623000
CY2023Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	884000
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	25712000
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	24271000
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	57438000
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-102057000
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	63570000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	115533000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	536591000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	330678000
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	600161000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	446211000
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	51106000
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	22726000
CY2024Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	454000
CY2023Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	175000
CY2024Q1	ffin	Number Of Bank Locations NumberOfBankLocations	79
CY2024Q1	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P7Y
CY2024Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2024Q1	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-size:10pt;margin-top:16.2pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;font-size:9pt;font-family:Times New Roman;min-width:fit-content;">Use of Estimates</span></p><p style="font-size:10pt;margin-top:5.4pt;font-family:Times New Roman;margin-bottom:0;text-align:justify;"><span style="color:#000000;white-space:pre-wrap;font-size:9pt;font-family:Times New Roman;min-width:fit-content;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The Company’s significant estimates include its allowance for credit losses and its valuation of financial instruments.</span></p>
	us-gaap	Employee Service Share Based Compensation Estimated Quantity Of Shares To Be Repurchased In Following Period EmployeeServiceShareBasedCompensationEstimatedQuantityOfSharesToBeRepurchasedInFollowingPeriod	0
CY2023Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	101337
CY2023Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	26.99
CY2023Q1	ffin	Minimum Period Of Loans Past Due MinimumPeriodOfLoansPastDue	P90D
CY2024Q1	ffin	Minimum Period Of Loans Past Due MinimumPeriodOfLoansPastDue	P90D
CY2024Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0
CY2023Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0
CY2023Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0
CY2023Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2024Q1	ffin	Securities Sold Under Agreement To Repurchase Maturity Description SecuritiesSoldUnderAgreementToRepurchaseMaturityDescription	one to four days
CY2024Q1	us-gaap	Maturities Of Time Deposits Description MaturitiesOfTimeDepositsDescription	90 days or less
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	441227000
CY2023Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	458249000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	403298000
CY2024Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	122844000
CY2023Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	122947000
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	110800000
CY2024Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	417000
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	480000
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	53397000
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142724674
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2024Q1	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0
CY2024Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	304775
CY2024Q1	ffin	Effect Of Stock Options Per Share Amount EffectOfStockOptionsPerShareAmount	0
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	53397000
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143029449
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	52568000
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142665646
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2023Q1	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0
CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	400365
CY2023Q1	ffin	Effect Of Stock Options Per Share Amount EffectOfStockOptionsPerShareAmount	0
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	52568000
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143066011
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5217517000
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	694000
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	559685000
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4658526000
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5879040000
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1611000
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	582094000
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5298557000
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5243681000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	945000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	511864000
CY2024Q1	us-gaap	Debt Securities Trading Restricted DebtSecuritiesTradingRestricted	2516117000
CY2024Q1	us-gaap	Available For Sale Debt Securities Gross Unrealized Gain AvailableForSaleDebtSecuritiesGrossUnrealizedGain	0
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4732762000
CY2024Q1	ffin	Interest Bearing Time Deposits In Banks InterestBearingTimeDepositsInBanks	0
CY2023Q1	ffin	Interest Bearing Time Deposits In Banks InterestBearingTimeDepositsInBanks	0
CY2023Q4	ffin	Interest Bearing Time Deposits In Banks InterestBearingTimeDepositsInBanks	0
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	343112000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	337823000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1374546000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1288485000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	2421721000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2126343000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1078138000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	905875000
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5217517000
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4658526000
CY2024Q1	us-gaap	Maturity Of Time Deposits MaturityOfTimeDeposits	P12M
CY2023Q1	us-gaap	Maturity Of Time Deposits MaturityOfTimeDeposits	P12M
CY2023Q4	us-gaap	Maturity Of Time Deposits MaturityOfTimeDeposits	P12M
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	122818000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	936000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4469213000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	558749000
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	4592031000
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	559685000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	616799000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	13693000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4499790000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	568401000
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	5116589000
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	582094000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	16963000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	42000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4655649000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	511822000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	4672612000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	511864000
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	832
CY2023Q1	us-gaap	Available For Sale Debt Securities Gross Unrealized Gain AvailableForSaleDebtSecuritiesGrossUnrealizedGain	1052000
CY2023Q1	us-gaap	Available For Sale Debt Securities Gross Unrealized Loss AvailableForSaleDebtSecuritiesGrossUnrealizedLoss	1040000
CY2024Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7229410000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6576215000
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7148791000
CY2024Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	89562000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	80818000
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	88734000
CY2024Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7139848000
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6495397000
CY2023Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7060057000
CY2024Q1	ffin	Loans Receivable Collateral For Secured Borrowings LoansReceivableCollateralForSecuredBorrowings	5095506000
CY2024Q1	us-gaap	Line Of Credit Facility Capacity Available For Trade Purchases LineOfCreditFacilityCapacityAvailableForTradePurchases	1984900000
CY2024Q1	ffin	Undisbursed Commitments UndisbursedCommitments	781500000
CY2024Q1	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	36157000
CY2023Q1	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	24171000
CY2023Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	33609000
CY2024Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	33000
CY2023Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	22000
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1004000
CY2024Q1	us-gaap	Notes Receivable Net NotesReceivableNet	36190000
CY2023Q1	us-gaap	Notes Receivable Net NotesReceivableNet	24193000
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	34613000
CY2024Q1	ffin	Loans Still Accruing Past Due Ninety Days Or More Restructured Loans Foreclosed Assets LoansStillAccruingPastDueNinetyDaysOrMoreRestructuredLoansForeclosedAssets	37204000
CY2023Q1	ffin	Loans Still Accruing Past Due Ninety Days Or More Restructured Loans Foreclosed Assets LoansStillAccruingPastDueNinetyDaysOrMoreRestructuredLoansForeclosedAssets	24389000
CY2023Q4	ffin	Loans Still Accruing Past Due Ninety Days Or More Restructured Loans Foreclosed Assets LoansStillAccruingPastDueNinetyDaysOrMoreRestructuredLoansForeclosedAssets	35096000
CY2024Q1	us-gaap	Loans And Leases Receivable Impaired Nonperforming Accrual Of Interest LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterest	36157000
CY2023Q1	us-gaap	Loans And Leases Receivable Impaired Nonperforming Accrual Of Interest LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterest	24171000
CY2023Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Accrual Of Interest LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterest	33609000
CY2024Q1	ffin	Additional Funds Advanced In Connection With Impaired Construction Loans AdditionalFundsAdvancedInConnectionWithImpairedConstructionLoans	0
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	88734000
CY2024Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1256000
CY2024Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	422000
CY2024Q1	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	796000000
CY2024Q1	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	152000000
CY2024Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	7230000000
CY2024Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-850000
CY2023Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	89562000
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	75834000
CY2023Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4707000
CY2023Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	565000
CY2023Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-288000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	80818000
CY2024Q1	ffin	Reserve For Unfunded Commitments Other Liabilities ReserveForUnfundedCommitmentsOtherLiabilities	7455000
CY2023Q1	ffin	Reserve For Unfunded Commitments Other Liabilities ReserveForUnfundedCommitmentsOtherLiabilities	10397000
CY2023Q4	ffin	Reserve For Unfunded Commitments Other Liabilities ReserveForUnfundedCommitmentsOtherLiabilities	7903000
CY2024Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1256000
CY2023Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4707000
CY2024Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	201587000
CY2024Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	19077000
CY2023Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	157056000
CY2023Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	16845000
CY2023Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	176213000
CY2023Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	17573000
CY2024Q1	ffin	Loans And Leases Receivable Individually Evaluated For Allowance LoansAndLeasesReceivableIndividuallyEvaluatedForAllowance	19077000
CY2024Q1	ffin	Loans And Leases Receivable Collectively Evaluated For Allowance LoansAndLeasesReceivableCollectivelyEvaluatedForAllowance	70485000
CY2024Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	89562000
CY2023Q1	ffin	Loans And Leases Receivable Individually Evaluated For Allowance LoansAndLeasesReceivableIndividuallyEvaluatedForAllowance	16845000
CY2023Q1	ffin	Loans And Leases Receivable Collectively Evaluated For Allowance LoansAndLeasesReceivableCollectivelyEvaluatedForAllowance	63973000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	80818000
CY2023Q4	ffin	Loans And Leases Receivable Individually Evaluated For Allowance LoansAndLeasesReceivableIndividuallyEvaluatedForAllowance	17573000
CY2023Q4	ffin	Loans And Leases Receivable Collectively Evaluated For Allowance LoansAndLeasesReceivableCollectivelyEvaluatedForAllowance	71161000
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	88734000
CY2024Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	201587000
CY2024Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	7027823000
CY2024Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7229410000
CY2023Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	157056000
CY2023Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6419159000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6576215000
CY2023Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	176213000
CY2023Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6972578000
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7148791000
CY2024Q1	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	746000000
CY2024Q1	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2152000000
CY2024Q1	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1876000000
CY2024Q1	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1015000000
CY2024Q1	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	493000000
CY2023Q1	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	582000000
CY2023Q1	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2858000000
CY2023Q1	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1324000000
CY2023Q1	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	620000000
CY2023Q1	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	293000000
CY2023Q1	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	751000000
CY2023Q1	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	148000000
CY2023Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	6576000000
CY2023Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2531000000
CY2023Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2036000000
CY2023Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1062000000
CY2023Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	518000000
CY2023Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	240000000
CY2023Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	613000000
CY2023Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	149000000
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7149000000
CY2024Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7229410000
CY2024Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	33000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6576215000
CY2023Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	22000
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7148791000
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1004000
CY2024Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	16109000
CY2023Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	11996000
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	14253000
CY2024Q1	ffin	Loans Held For Sale Valued At The Lower Of Cost Or Fair Value LoansHeldForSaleValuedAtTheLowerOfCostOrFairValue	1029000
CY2023Q1	ffin	Loans Held For Sale Valued At The Lower Of Cost Or Fair Value LoansHeldForSaleValuedAtTheLowerOfCostOrFairValue	230000
CY2023Q4	ffin	Loans Held For Sale Valued At The Lower Of Cost Or Fair Value LoansHeldForSaleValuedAtTheLowerOfCostOrFairValue	3176000
CY2024Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	307297000
CY2023Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	608299000
CY2023Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	381928000
CY2024Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	5750000
CY2023Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	3575000
CY2023Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	1100000
CY2024Q1	us-gaap	Other Borrowings OtherBorrowings	21053000
CY2023Q1	us-gaap	Other Borrowings OtherBorrowings	21053000
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	21053000
CY2024Q1	ffin	Total Borrowings TotalBorrowings	334100000
CY2023Q1	ffin	Total Borrowings TotalBorrowings	632927000
CY2023Q4	ffin	Total Borrowings TotalBorrowings	404081000
CY2024Q1	ffin	Line Of Credit Facility Renewal Date LineOfCreditFacilityRenewalDate	2023-06-30
CY2024Q1	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	25000000
CY2024Q1	us-gaap	Line Of Credit LineOfCredit	0
CY2024Q1	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	21053000
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11480000
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11688000
CY2024Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.177
CY2023Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1819
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024Q1	us-gaap	Employee Stock Ownership Plan Esop Gain Loss On Transactions In Deferred Shares EmployeeStockOwnershipPlanESOPGainLossOnTransactionsInDeferredShares	5500000
CY2024Q1	us-gaap	Contribution Of Property ContributionOfProperty	978000
CY2023Q1	us-gaap	Contribution Of Property ContributionOfProperty	131000
CY2023	us-gaap	Contribution Of Property ContributionOfProperty	615000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	25190
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	27.79
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	24813
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	36.21
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	0
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	2872
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	28.25
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	0
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	1105
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	29.7
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	25190
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	27.79
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	20836
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	37.53
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2024Q1	ffin	Percentage Of Option Vesting Rate PercentageOfOptionVestingRate	0.20
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1552249
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	30.45
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2024Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	82614
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	20.77
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	21692
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	36.49
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1447943
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	30.91
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	813657
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	25.85
CY2024Q1	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	16.95
CY2024Q1	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	48.91
CY2024Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	485000
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	444000
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	4723000
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y5M8D
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	46000
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	15000
CY2024Q1	ffin	Fair Value Measurement With Unobservant Inputs Reconciliation Recurring Basis Asset Transfers Into Level Two FairValueMeasurementWithUnobservantInputsReconciliationRecurringBasisAssetTransfersIntoLevelTwo	0
CY2023Q1	ffin	Fair Value Measurement With Unobservant Inputs Reconciliation Recurring Basis Asset Transfers Into Level Two FairValueMeasurementWithUnobservantInputsReconciliationRecurringBasisAssetTransfersIntoLevelTwo	0
CY2023	ffin	Fair Value Measurement With Unobservant Inputs Reconciliation Recurring Basis Asset Transfers Into Level Two FairValueMeasurementWithUnobservantInputsReconciliationRecurringBasisAssetTransfersIntoLevelTwo	0
CY2024Q1	ffin	Unpaid Principal Balance On Loans Held For Sale UnpaidPrincipalBalanceOnLoansHeldForSale	14701000
CY2023Q1	ffin	Unpaid Principal Balance On Loans Held For Sale UnpaidPrincipalBalanceOnLoansHeldForSale	11416000
CY2023Q4	ffin	Unpaid Principal Balance On Loans Held For Sale UnpaidPrincipalBalanceOnLoansHeldForSale	10757000
CY2024Q1	ffin	Net Unrealized Gains On Loans Held For Sale NetUnrealizedGainsOnLoansHeldForSale	-379000
CY2023Q1	ffin	Net Unrealized Gains On Loans Held For Sale NetUnrealizedGainsOnLoansHeldForSale	-350000
CY2023Q4	ffin	Net Unrealized Gains On Loans Held For Sale NetUnrealizedGainsOnLoansHeldForSale	-320000
CY2024Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	15080000
CY2023Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	11766000
CY2023Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	11077000
CY2024Q1	ffin	Realized Gain On Sale And Fees On Mortgage Loans RealizedGainOnSaleAndFeesOnMortgageLoans	2580000
CY2023Q1	ffin	Realized Gain On Sale And Fees On Mortgage Loans RealizedGainOnSaleAndFeesOnMortgageLoans	2859000
CY2024Q1	ffin	Change In Fair Value On Loans Held For Sale And Irlcs ChangeInFairValueOnLoansHeldForSaleAndIRLCS	351000
CY2023Q1	ffin	Change In Fair Value On Loans Held For Sale And Irlcs ChangeInFairValueOnLoansHeldForSaleAndIRLCS	534000
CY2024Q1	ffin	Change In Forward Mortgage Backed Securities Trades ChangeInForwardMortgageBackedSecuritiesTrades	197000
CY2023Q1	ffin	Change In Forward Mortgage Backed Securities Trades ChangeInForwardMortgageBackedSecuritiesTrades	-419000
CY2024Q1	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	3128000
CY2023Q1	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	2974000
CY2024Q1	us-gaap	Foreclosed Assets ForeclosedAssets	937000
CY2023Q1	us-gaap	Foreclosed Assets ForeclosedAssets	175000
CY2023Q4	us-gaap	Foreclosed Assets ForeclosedAssets	483000

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0000950170-24-052911-index.html	Edgar Link	pending
0000950170-24-052911.txt	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable

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FIRST FINANCIAL BANKSHARES INC Stock $ffin

2024 Q2 Form 10-Q Financial Statement

#000095017024052911 Filed on May 03, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FFIN FIRST FINANCIAL BANKSHARES INC Stock $ffin

2024 Q2 Form 10-Q Financial Statement

#000095017024052911 Filed on May 03, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FFIN
FIRST FINANCIAL BANKSHARES INC Stock $ffin