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Loans and Allowance for Credit Losses - Nonaccrual Loans by Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	$ 49,997	$ 19,012
Nonaccrual With An Allowance For Credit Losses	14,961	20,948
Total Nonaccrual Loans	64,958	39,960
Interest income, Nonaccrual With No Allowance For Credit Losses	655	285
Interest income, Nonaccrual With An Allowance For Credit Losses	295	363
Interest income, Total Nonaccrual Loans	950	648
Nonaccrual Delinquent Loans	6,788	7,424
Nonaccrual Current Loans	58,170	32,536
Commercial real estate
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	40,989	6,135
Nonaccrual With An Allowance For Credit Losses	11,292	19,498
Total Nonaccrual Loans	52,281	25,633
Nonaccrual Delinquent Loans	1,838	2,809
Nonaccrual Current Loans	50,443	22,824
Residential real estate
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	8,116	9,594
Nonaccrual With An Allowance For Credit Losses	961	544
Total Nonaccrual Loans	9,077	10,138
Nonaccrual Delinquent Loans	4,651	3,808
Nonaccrual Current Loans	4,426	6,330
Construction
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	161	88
Nonaccrual With An Allowance For Credit Losses	0	0
Total Nonaccrual Loans	161	88
Nonaccrual Delinquent Loans	161	88
Nonaccrual Current Loans	0	0
Commercial
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	256	2,297
Nonaccrual With An Allowance For Credit Losses	2,586	784
Total Nonaccrual Loans	2,842	3,081
Nonaccrual Delinquent Loans	0	196
Nonaccrual Current Loans	2,842	2,885
Consumer
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	475	898
Nonaccrual With An Allowance For Credit Losses	59	74
Total Nonaccrual Loans	534	972
Nonaccrual Delinquent Loans	75	491
Nonaccrual Current Loans	459	481
Credit cards
Nonaccrual loans:
Nonaccrual With No Allowance For Credit Losses	0	0
Nonaccrual With An Allowance For Credit Losses	63	48
Total Nonaccrual Loans	63	48
Nonaccrual Delinquent Loans	63	32
Nonaccrual Current Loans	$ 0	$ 16

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