$THFF
First Financial Corp Stock $thff

$thff Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000071456221000076 Filed on November 03, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue		$38.15M	$39.54M
YoY Change		-3.53%	-0.14%
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	$1.480M	$1.530M	$1.580M
YoY Change	-5.13%	-3.16%	44.95%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$2.117M	$3.008M
YoY Change		-29.62%	-46.25%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$8.580M	$20.16M	$16.72M
YoY Change	-54.36%	20.62%	12.67%
Income Tax	$1.180M	$4.063M	$2.715M
% Of Pretax Income	13.75%	20.15%	16.24%
Net Earnings	$7.400M	$16.10M	$14.00M
YoY Change	-52.98%	14.99%	14.22%
Net Earnings / Revenue		42.2%	35.41%
Basic Earnings Per Share		$1.24
Diluted Earnings Per Share	$578.1K	$1.237M	$1.020M
COMMON SHARES
Basic Shares Outstanding	12.87M shares	13.05M shares	13.71M shares
Diluted Shares Outstanding		13.02K

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$682.8M	$758.1M	$388.4M
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	$69.52M	$63.19M	$62.97M
YoY Change	12.02%	0.35%	-10.8%
Goodwill	$86.14M	$78.59M	$78.59M
YoY Change	9.6%	0.0%	4.21%
Intangibles	$8.024M	$7.725M	$9.405M
YoY Change	-10.57%	-17.86%	-16.48%
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	$5.175B	$4.801B	$4.390B
YoY Change	13.48%	9.36%	10.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$93.37M	$101.1M	$95.20M
YoY Change	-19.57%	6.2%	4.73%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$93.40M	$101.1M	$95.20M
YoY Change	-19.55%	6.2%	4.73%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$73.60M	$70.60M	$72.50M
YoY Change	-11.0%	-2.62%	12.23%
Total Long-Term Liabilities	$73.60M	$70.60M	$72.50M
YoY Change	-11.0%	-2.62%	12.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$93.40M	$101.1M	$95.20M
Total Long-Term Liabilities	$73.60M	$70.60M	$72.50M
Total Liabilities	$4.593B	$4.206B	$3.783B
YoY Change	15.87%	11.19%	10.24%
SHAREHOLDERS EQUITY
Retained Earnings	$559.1M	$559.7M	$523.0M
YoY Change	7.3%	7.01%	7.88%
Common Stock	$144.0M	$143.5M	$142.3M
YoY Change	0.81%	0.81%	0.88%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$118.1M	$107.1M	$70.37M
YoY Change	54.01%	52.23%	1.29%
Treasury Stock Shares	3.466M shares	3.048M shares	2.361M shares
Shareholders Equity	$582.6M	$594.9M	$607.1M
YoY Change
Total Liabilities & Shareholders Equity	$5.175B	$4.801B	$4.390B
YoY Change	13.48%	9.36%	10.08%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$7.400M	$16.10M	$14.00M
YoY Change	-52.98%	14.99%	14.22%
Depreciation, Depletion And Amortization	$1.480M	$1.530M	$1.580M
YoY Change	-5.13%	-3.16%	44.95%
Cash From Operating Activities	$12.16M	$15.39M	$13.08M
YoY Change	-50.65%	17.66%	15.45%
INVESTING ACTIVITIES
Capital Expenditures	$710.0K	-$440.0K	-$850.0K
YoY Change	-408.7%	-48.24%	34.92%
Acquisitions
YoY Change
Other Investing Activities	-$162.5M	$29.86M	-$22.76M
YoY Change	-292.33%	-231.2%	-224.64%
Cash From Investing Activities	-$161.8M	$29.42M	-$23.61M
YoY Change	-292.01%	-224.61%	-234.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	74.36M	35.44M	12.46M
YoY Change	-53.56%	184.43%	-229.39%
NET CHANGE
Cash From Operating Activities	12.16M	15.39M	13.08M
Cash From Investing Activities	-161.8M	29.42M	-23.61M
Cash From Financing Activities	74.36M	35.44M	12.46M
Net Change In Cash	-75.31M	80.25M	1.930M
YoY Change	-127.99%	4058.03%	-90.01%
FREE CASH FLOW
Cash From Operating Activities	$12.16M	$15.39M	$13.08M
Capital Expenditures	$710.0K	-$440.0K	-$850.0K
Free Cash Flow	$11.45M	$15.83M	$13.93M
YoY Change	-53.96%	13.64%	16.47%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0000714562
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Type DocumentType	10-Q
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Address Address Line1 EntityAddressAddressLine1	One First Financial Plaza
	dei	Entity Address City Or Town EntityAddressCityOrTown	Terre Haute
	dei	Entity Address State Or Province EntityAddressStateOrProvince	IN
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000	shares
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	16096313	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	16075154	shares
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	13048229	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	13558511	shares
CY2021Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	3048084	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	2516643	shares
CY2021Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	497000	shares
CY2020Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	531441	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	46989	shares
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	0-16759
	dei	Entity Registrant Name EntityRegistrantName	FIRST FINANCIAL CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	IN
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	35-1546989
	dei	Entity Address Address Line1 EntityAddressAddressLine1	One First Financial Plaza
	dei	Entity Address City Or Town EntityAddressCityOrTown	Terre Haute
	dei	Entity Address State Or Province EntityAddressStateOrProvince	IN
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	47807
	dei	City Area Code CityAreaCode	(812)
	dei	Local Phone Number LocalPhoneNumber	238-6000
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.125 per share
	dei	Trading Symbol TradingSymbol	THFF
	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	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2021Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	12871936	shares
CY2021Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	758120000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	657470000	USD
CY2021Q3	us-gaap	Federal Funds Sold FederalFundsSold	6183000	USD
CY2020Q4	us-gaap	Federal Funds Sold FederalFundsSold	301000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1270820000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1020744000	USD
CY2021Q3	us-gaap	Notes And Loans Receivable Gross Current NotesAndLoansReceivableGrossCurrent	1457984000	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Gross Current NotesAndLoansReceivableGrossCurrent	1521711000	USD
CY2021Q3	thff	Loans And Leases Receivable Residential LoansAndLeasesReceivableResidential	535855000	USD
CY2020Q4	thff	Loans And Leases Receivable Residential LoansAndLeasesReceivableResidential	604652000	USD
CY2021Q3	thff	Loans And Leases Receivable Gross Consumer Excluding Mortgage And Home Equity LoansAndLeasesReceivableGrossConsumerExcludingMortgageAndHomeEquity	482115000	USD
CY2020Q4	thff	Loans And Leases Receivable Gross Consumer Excluding Mortgage And Home Equity LoansAndLeasesReceivableGrossConsumerExcludingMortgageAndHomeEquity	479750000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	2475954000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	2606113000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	-3956000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	-4181000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	42962000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	47052000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	2436948000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	2563242000	USD
CY2021Q3	us-gaap	Restricted Investments RestrictedInvestments	14837000	USD
CY2020Q4	us-gaap	Restricted Investments RestrictedInvestments	14812000	USD
CY2021Q3	us-gaap	Interest Receivable InterestReceivable	15963000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	16957000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63187000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	62063000	USD
CY2021Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	106895000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	95849000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	78592000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	78592000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	7725000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	8972000	USD
CY2021Q3	us-gaap	Other Real Estate OtherRealEstate	884000	USD
CY2020Q4	us-gaap	Other Real Estate OtherRealEstate	1012000	USD
CY2021Q3	us-gaap	Other Assets OtherAssets	40939000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	37530000	USD
CY2021Q3	us-gaap	Assets Assets	4801093000	USD
CY2020Q4	us-gaap	Assets Assets	4557544000	USD
CY2021Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	814902000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	732694000	USD
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	68920000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	107764000	USD
CY2021Q3	us-gaap	Interestbearing Domestic Deposit Other InterestbearingDomesticDepositOther	3144814000	USD
CY2020Q4	us-gaap	Interestbearing Domestic Deposit Other InterestbearingDomesticDepositOther	2915487000	USD
CY2021Q3	us-gaap	Deposits Deposits	4028636000	USD
CY2020Q4	us-gaap	Deposits Deposits	3755945000	USD
CY2021Q3	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	101051000	USD
CY2020Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	116061000	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	5902000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	5859000	USD
CY2021Q3	us-gaap	Other Liabilities OtherLiabilities	70569000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	82687000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	4206158000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	3960552000	USD
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	2009000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	2007000	USD
CY2021Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	141456000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	140820000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	559693000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	521103000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1102000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9764000	USD
CY2021Q3	us-gaap	Treasury Stock Value TreasuryStockValue	107121000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	76702000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	594935000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	596992000	USD
CY2021Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4801093000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4557544000	USD
CY2021Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	31937000	USD
CY2020Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	34077000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	95760000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	102335000	USD
CY2021Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3627000	USD
CY2020Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3005000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	10061000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	10658000	USD
CY2021Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2234000	USD
CY2020Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1994000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	6471000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5940000	USD
CY2021Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	347000	USD
CY2020Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	463000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1080000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1265000	USD
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	38145000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	39539000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	113372000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	120198000	USD
CY2021Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1959000	USD
CY2020Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2689000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6335000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10238000	USD
CY2021Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	99000	USD
CY2020Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	107000	USD
	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	291000	USD
	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	475000	USD
CY2021Q3	us-gaap	Interest Expense Other InterestExpenseOther	59000	USD
CY2020Q3	us-gaap	Interest Expense Other InterestExpenseOther	212000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	177000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	709000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	2117000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	3008000	USD
	us-gaap	Interest Expense InterestExpense	6803000	USD
	us-gaap	Interest Expense InterestExpense	11422000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	36028000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	36531000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	106569000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	108776000	USD
CY2021Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-1500000	USD
CY2020Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4425000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-3244000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	10080000	USD
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	37528000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	32106000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	109813000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	98696000	USD
CY2021Q3	thff	Trust And Financial Services Revenue TrustAndFinancialServicesRevenue	1156000	USD
CY2020Q3	thff	Trust And Financial Services Revenue TrustAndFinancialServicesRevenue	1210000	USD
	thff	Trust And Financial Services Revenue TrustAndFinancialServicesRevenue	3774000	USD
	thff	Trust And Financial Services Revenue TrustAndFinancialServicesRevenue	4032000	USD
CY2021Q3	thff	Service Charges And Fees On Deposit Accounts ServiceChargesAndFeesOnDepositAccounts	2697000	USD
CY2020Q3	thff	Service Charges And Fees On Deposit Accounts ServiceChargesAndFeesOnDepositAccounts	2516000	USD
	thff	Service Charges And Fees On Deposit Accounts ServiceChargesAndFeesOnDepositAccounts	7267000	USD
	thff	Service Charges And Fees On Deposit Accounts ServiceChargesAndFeesOnDepositAccounts	7616000	USD
CY2021Q3	thff	Service Charges And Fees Other ServiceChargesAndFeesOther	4466000	USD
CY2020Q3	thff	Service Charges And Fees Other ServiceChargesAndFeesOther	4269000	USD
	thff	Service Charges And Fees Other ServiceChargesAndFeesOther	13747000	USD
	thff	Service Charges And Fees Other ServiceChargesAndFeesOther	11468000	USD
CY2021Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5000	USD
CY2020Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	111000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	230000	USD
CY2021Q3	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	1425000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	2910000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	4268000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	4813000	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1343000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	829000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2150000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1451000	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	11092000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	11739000	USD
	us-gaap	Noninterest Income NoninterestIncome	31317000	USD
	us-gaap	Noninterest Income NoninterestIncome	29610000	USD
CY2021Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	15770000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	15474000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	47478000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	45769000	USD
CY2021Q3	us-gaap	Occupancy Net OccupancyNet	2151000	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	2003000	USD
	us-gaap	Occupancy Net OccupancyNet	6302000	USD
	us-gaap	Occupancy Net OccupancyNet	6094000	USD
CY2021Q3	us-gaap	Equipment Expense EquipmentExpense	2177000	USD
CY2020Q3	us-gaap	Equipment Expense EquipmentExpense	2739000	USD
	us-gaap	Equipment Expense EquipmentExpense	7195000	USD
	us-gaap	Equipment Expense EquipmentExpense	7873000	USD
CY2021Q3	thff	Federal Deposit Insurance Corporation Premium Expense Benefit FederalDepositInsuranceCorporationPremiumExpenseBenefit	313000	USD
CY2020Q3	thff	Federal Deposit Insurance Corporation Premium Expense Benefit FederalDepositInsuranceCorporationPremiumExpenseBenefit	135000	USD
	thff	Federal Deposit Insurance Corporation Premium Expense Benefit FederalDepositInsuranceCorporationPremiumExpenseBenefit	898000	USD
	thff	Federal Deposit Insurance Corporation Premium Expense Benefit FederalDepositInsuranceCorporationPremiumExpenseBenefit	-46000	USD
CY2021Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8048000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	6779000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	22221000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	21877000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	28459000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	27130000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-12281000	USD
	us-gaap	Noninterest Expense NoninterestExpense	84094000	USD
	us-gaap	Noninterest Expense NoninterestExpense	81567000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20161000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16715000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	57036000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	46739000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4063000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2715000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11447000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8634000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	16098000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	14000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45589000	USD
	us-gaap	Net Income Loss NetIncomeLoss	38105000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-2985000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	2223000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	18451000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-471000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-383000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1415000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1171000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	13584000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16606000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	34723000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57727000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.24
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.02
	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	3.42
	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.78
CY2021Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	13019000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	13715000	shares
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	13320000	shares
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	13723000	shares
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	590284000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	14000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2606000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	205000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	607095000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	588163000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	16098000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2514000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	217000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	594935000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	557608000	USD
	us-gaap	Net Income Loss NetIncomeLoss	38105000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	19622000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	615000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1724000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1724000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	7131000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	607095000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	596992000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45589000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-10866000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	638000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30419000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30419000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6999000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	594935000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45589000	USD
	us-gaap	Net Income Loss NetIncomeLoss	38105000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	6207000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5149000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-3244000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	10080000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	111000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	230000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	4268000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	4813000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-10000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-140000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	638000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	615000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4670000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4527000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-6583000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-780000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	42908000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	52793000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	9369000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	28161000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	198613000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	181963000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	479007000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	221830000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-135691000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	92854000	USD
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	0	USD
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	400000	USD
	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	25000	USD
	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	18000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	10000000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	237000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	487000	USD
	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	-5882000	USD
	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	6841000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4547000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3681000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-155551000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-100531000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	272903000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	329929000	USD
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-15010000	USD
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	15130000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	37010000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	16700000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30419000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1724000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	14181000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	14273000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	213293000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	308752000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	100650000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	261014000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	657470000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	127426000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	758120000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	388440000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
	thff	Share Based Compensation Arrangement By Share Based Payment Award Vesting Rights Percentage For First Year ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRightsPercentageForFirstYear	0.33
	thff	Share Based Compensation Arrangement By Share Based Payment Award Incremental Vesting Rights Percentage For Second Year ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalVestingRightsPercentageForSecondYear	0.33
	thff	Share Based Compensation Arrangement By Share Based Payment Award Incremental Vesting Rights Percentage For Third Year ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalVestingRightsPercentageForThirdYear	0.34
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	21159	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	19688	shares
CY2021Q3	thff	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue	885000	USD
CY2020Q3	thff	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue	837000	USD
CY2021Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44732000	USD
CY2021Q3	thff	Provision For Loan And Lease Losses Excluding Fdic Indemnification Asset Changes ProvisionForLoanAndLeaseLossesExcludingFDICIndemnificationAssetChanges	-1500000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1614000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1344000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	42962000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	23285000	USD
CY2020Q3	thff	Provision For Loan And Lease Losses Excluding Fdic Indemnification Asset Changes ProvisionForLoanAndLeaseLossesExcludingFDICIndemnificationAssetChanges	4425000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1998000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1248000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	26960000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	47052000	USD
	thff	Provision For Loan And Lease Losses Excluding Fdic Indemnification Asset Changes ProvisionForLoanAndLeaseLossesExcludingFDICIndemnificationAssetChanges	-3244000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5103000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	4257000	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	42962000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	19943000	USD
	thff	Provision For Loan And Lease Losses Excluding Fdic Indemnification Asset Changes ProvisionForLoanAndLeaseLossesExcludingFDICIndemnificationAssetChanges	10080000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6442000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3379000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	26960000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	13198000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	0	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	10811000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	0	USD
CY2021Q3	thff	Financing Receivable Recorded Investment FinancingReceivableRecordedInvestment	2486537000	USD
CY2020Q4	thff	Financing Receivable Recorded Investment FinancingReceivableRecordedInvestment	2618553000	USD
CY2021Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4460000	USD
CY2021Q3	thff	Financing Receivable Impaired Troubled Debt Restructuring Additions During Period FinancingReceivableImpairedTroubledDebtRestructuringAdditionsDuringPeriod	172000	USD
CY2021Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	USD
CY2021Q3	thff	Loans And Leases Receivable Minimum Outstanding Balance To Be Individually Evaluated LoansAndLeasesReceivableMinimumOutstandingBalanceToBeIndividuallyEvaluated	100000	USD
CY2021Q3	thff	Financing Receivable Impaired Troubled Debt Restructuring Payments During Period FinancingReceivableImpairedTroubledDebtRestructuringPaymentsDuringPeriod	143000	USD
CY2021Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4489000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4206000	USD
	thff	Financing Receivable Impaired Troubled Debt Restructuring Additions During Period FinancingReceivableImpairedTroubledDebtRestructuringAdditionsDuringPeriod	785000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	102000	USD
	thff	Financing Receivable Impaired Troubled Debt Restructuring Payments During Period FinancingReceivableImpairedTroubledDebtRestructuringPaymentsDuringPeriod	400000	USD
CY2021Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4489000	USD
CY2020Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	3899000	USD
CY2020Q3	thff	Financing Receivable Impaired Troubled Debt Restructuring Additions During Period FinancingReceivableImpairedTroubledDebtRestructuringAdditionsDuringPeriod	394000	USD
CY2020Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	30000	USD
CY2020Q3	thff	Financing Receivable Impaired Troubled Debt Restructuring Payments During Period FinancingReceivableImpairedTroubledDebtRestructuringPaymentsDuringPeriod	166000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4097000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4194000	USD
	thff	Financing Receivable Impaired Troubled Debt Restructuring Additions During Period FinancingReceivableImpairedTroubledDebtRestructuringAdditionsDuringPeriod	652000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	86000	USD
	thff	Financing Receivable Impaired Troubled Debt Restructuring Payments During Period FinancingReceivableImpairedTroubledDebtRestructuringPaymentsDuringPeriod	663000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4097000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1242760000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	35201000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	7141000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1270820000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	977830000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	43354000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	440000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1020744000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	12587000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	12658000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	46094000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	47490000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	71063000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	74923000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	362734000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	382615000	USD
CY2021Q3	thff	Available For Sale Securities Debt Maturities With Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithMaturityDateAmortizedCost	492478000	USD
CY2021Q3	thff	Available For Sale Securities Debt Maturities With Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithMaturityDateFairValue	517686000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	750282000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	753134000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1242760000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1270820000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	494342000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	6932000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	13574000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	209000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	507916000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	7141000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	90241000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	390000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4711000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	50000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	94952000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	440000	USD
CY2020Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2019Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2020Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2019Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
CY2020Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2020Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2020Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2974000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1270820000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1020744000	USD
CY2021Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5160000	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-21000	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5139000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5031000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	108000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5139000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	6184000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-483000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	670000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5031000	USD
CY2021Q3	thff	Impaired Financing Receivable Unpaid Principal Balance Fair Value Disclosure ImpairedFinancingReceivableUnpaidPrincipalBalanceFairValueDisclosure	6829000	USD
CY2021Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4598000	USD
CY2021Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	2231000	USD
CY2020Q4	thff	Impaired Financing Receivable Unpaid Principal Balance Fair Value Disclosure ImpairedFinancingReceivableUnpaidPrincipalBalanceFairValueDisclosure	11367000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4786000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	6581000	USD
CY2021Q3	us-gaap	Federal Funds Purchased FederalFundsPurchased	1575000	USD
CY2020Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	6500000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	99476000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	109561000	USD
CY2021Q3	thff	Federal Funds Purchased Repurchase Agreements Notes Payable FederalFundsPurchasedRepurchaseAgreementsNotesPayable	101051000	USD
CY2020Q4	thff	Federal Funds Purchased Repurchase Agreements Notes Payable FederalFundsPurchasedRepurchaseAgreementsNotesPayable	116061000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	99476000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	109561000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	2300000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Remainder Of Fiscal Year DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear	715000	USD
	thff	Defined Contribution Plan Employer Accrued Discretionary Contribution Amount DefinedContributionPlanEmployerAccruedDiscretionaryContributionAmount	2300000	USD
	thff	Defined Contribution Plan Employer Accrued Discretionary Contribution Amount DefinedContributionPlanEmployerAccruedDiscretionaryContributionAmount	1400000	USD
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1412000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-2981000	USD
CY2021Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-467000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2514000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1102000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9764000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-12198000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1332000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1102000	USD
CY2020Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9515000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	2227000	USD
CY2020Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-379000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2606000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12121000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7501000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	18624000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-998000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19622000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12121000	USD
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1412000	USD
CY2021Q3	thff	Other Comprehensive Income Loss Netof Tax Footnote OtherComprehensiveIncomeLossNetofTaxFootnote	-2514000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1102000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9764000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-10866000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1102000	USD
CY2020Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9515000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2606000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12121000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7501000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	19622000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12121000	USD

Files In Submission

Name	View Source	Status
0000714562-21-000076-index-headers.html	Edgar Link	pending
0000714562-21-000076-index.html	Edgar Link	pending
0000714562-21-000076.txt	Edgar Link	pending
0000714562-21-000076-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
thff-20210930.htm	Edgar Link	pending
thff-20210930.xsd	Edgar Link	pending
thff-20210930x10qexx311.htm	Edgar Link	pending
thff-20210930x10qexx312.htm	Edgar Link	pending
thff-20210930x10qexx321.htm	Edgar Link	pending
thff-20210930_cal.xml	Edgar Link	unprocessable
thff-20210930_def.xml	Edgar Link	unprocessable
thff-20210930_htm.xml	Edgar Link	completed
thff-20210930_lab.xml	Edgar Link	unprocessable
thff-20210930_pre.xml	Edgar Link	unprocessable

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$THFF
First Financial Corp Stock $thff

2021 Q4 Form 10-Q Financial Statement

#000071456221000076 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$THFF First Financial Corp Stock $thff

2021 Q4 Form 10-Q Financial Statement

#000071456221000076 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$THFF
First Financial Corp Stock $thff