Fair Value Measurements - Estimated Fair Values, Related Carrying Amounts, and Valuation Level of the Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financial Assets
Loans held for sale, at fair value	$ 63,971	$ 66,447
Level 1
Financial Assets
Cash and cash equivalents	375,357	407,596
Loans held for sale, at fair value	63,971	66,447
Accrued interest receivable	27,150	25,390
Financial Liabilities
Deposits, other than time deposits	3,518,621	3,348,643
Level 2
Financial Assets
Non-public investments	23,465	16,594
Bank owned life insurance ("BOLI")	110,586	104,335
Financial Liabilities
Time deposits	2,578,013	2,506,499
FHLB borrowings	186,033	191,970
Level 3
Financial Assets
Loans receivable, net	6,207,104	5,893,652
Non-public investments	17,273	17,146
Carrying Value
Financial Assets
Cash and cash equivalents	375,357	407,596
Loans held for sale, at fair value	63,971	66,447
Loans receivable, net	6,129,715	5,898,729
Accrued interest receivable	27,150	25,390
Non-public investments	40,738	33,740
Bank owned life insurance ("BOLI")	110,586	104,335
Financial Liabilities
Deposits, other than time deposits	3,518,621	3,348,643
Time deposits	2,578,367	2,504,891
FHLB borrowings	189,701	196,235
Fair Value
Financial Assets
Cash and cash equivalents	375,357	407,596
Loans held for sale, at fair value	63,971	66,447
Loans receivable, net	6,207,104	5,893,652
Accrued interest receivable	27,150	25,390
Non-public investments	40,738	33,740
Bank owned life insurance ("BOLI")	110,586	104,335
Financial Liabilities
Deposits, other than time deposits	3,518,621	3,348,643
Time deposits	2,578,013	2,506,499
FHLB borrowings	$ 186,033	$ 191,970

Fair value portion of accrued interest receivable.

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Fair value portion of bank owned life insurance.

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Fair value portion of noninterest-bearing demand deposits.

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Fair value portion of time deposits.

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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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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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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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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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