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Fair Value Measurements and Fair Values of Financial Instruments, Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial assets [Abstract]
HTM securities	$ 749,945	$ 814,524
Carrying Amount [Member] | Level 1 [Member]
Financial liabilities [Abstract]
Subordinated debt	121,401	120,380
Carrying Amount [Member] | Level 2 [Member]
Financial assets [Abstract]
HTM securities	842,921	905,267
Financial liabilities [Abstract]
Time deposits	1,442,505	1,324,709
Long-term debt	29,644	29,796
Junior subordinated debt	101,196	101,196
Carrying Amount [Member] | Level 3 [Member]
Financial assets [Abstract]
Net loans	9,863,654	9,539,684
Estimated Fair Value [Member] | Level 1 [Member]
Financial liabilities [Abstract]
Subordinated debt	118,693	113,757
Estimated Fair Value [Member] | Level 2 [Member]
Financial assets [Abstract]
HTM securities	749,945	814,524
Financial liabilities [Abstract]
Time deposits	1,431,942	1,285,999
Long-term debt	29,439	29,416
Junior subordinated debt	105,763	102,337
Estimated Fair Value [Member] | Level 3 [Member]
Financial assets [Abstract]
Net loans	$ 9,458,786	$ 9,216,162

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- Definition

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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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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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