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Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 410,968	$ 456,777
Cash and cash equivalents, Fair Value	410,968	456,777
Securities held-to-maturity, net	264,662	250,609
Securities held-to-maturity, net, fair value	250,571	238,815
Loans held-for-sale	44,816	108,608
Loans held for sale, Fair Value	49,190	117,917
Net loans	3,757,977	3,691,042
Net loans, fair value	3,698,922	3,642,632
Accrued interest receivable	29,136	27,909
Accrued interest receivable, Fair Value	29,136	27,909
Federal Home Loan Bank of Indianapolis stock	28,350	28,350
Federal Home Loan Bank of Indianapolis stock, Fair Value	28,350	28,350
Deposits	4,831,378	4,839,813
Deposits, Fair Value	4,796,701	4,853,941
Advances from Federal Home Loan Bank	239,500	249,500
Advances from Federal Home Loan Bank, Fair Value	239,115	252,046
Subordinated debt	105,626	105,465
Subordinated debt, Fair Value	106,769	105,492
Accrued interest payable	1,594	1,744
Accrued interest payable, Fair Value	1,594	1,744
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, Fair Value	410,968	456,777
Securities held-to-maturity, net, fair value	0	0
Loans held for sale, Fair Value	0	0
Net loans, fair value	0	0
Accrued interest receivable, Fair Value	29,136	27,909
Federal Home Loan Bank of Indianapolis stock, Fair Value	0	0
Deposits, Fair Value	2,888,873	2,559,565
Advances from Federal Home Loan Bank, Fair Value	0	0
Subordinated debt, Fair Value	37,059	37,059
Accrued interest payable, Fair Value	1,594	1,744
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, Fair Value	0	0
Securities held-to-maturity, net, fair value	250,571	238,815
Loans held for sale, Fair Value	49,190	117,917
Net loans, fair value	0	0
Accrued interest receivable, Fair Value	0	0
Federal Home Loan Bank of Indianapolis stock, Fair Value	28,350	28,350
Deposits, Fair Value	0	0
Advances from Federal Home Loan Bank, Fair Value	239,115	252,046
Subordinated debt, Fair Value	69,710	68,433
Accrued interest payable, Fair Value	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, Fair Value	0	0
Securities held-to-maturity, net, fair value	0	0
Loans held for sale, Fair Value	0	0
Net loans, fair value	3,698,922	3,642,632
Accrued interest receivable, Fair Value	0	0
Federal Home Loan Bank of Indianapolis stock, Fair Value	0	0
Deposits, Fair Value	1,907,828	2,294,376
Advances from Federal Home Loan Bank, Fair Value	0	0
Subordinated debt, Fair Value	0	0
Accrued interest payable, Fair Value	$ 0	$ 0

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- Definition

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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