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Income Taxes - Differences Between Tax Basis of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Deferred tax assets:
Allowance for credit losses	$ 78,193	$ 76,221
Deferred compensation	6,056	6,783
Stock compensation	3,523	4,981
Non-accrual interest income	1,547	1,798
Real estate owned	311	674
Unrealized loss on investment securities, available-for-sale	56,460	79,847
Loan discounts	2,369	3,323
Investments	22,699	26,042
Accelerated depreciation on premises and equipment	2,089	664
Other	12,683	14,634
Gross deferred tax assets	185,930	214,967
Deferred tax liabilities:
Tax basis on acquisitions	9,963	7,439
Core deposit intangibles	7,672	8,997
FHLB dividends	2,054	1,919
Other	10,278	9,915
Gross deferred tax liabilities	29,967	28,270
Net deferred tax assets	$ 155,963	$ 186,697

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