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Allowance for Credit Losses - Schedule of Loans for Borrowers Experiencing Financial Difficulties Modified (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	$ 19,821	$ 3,122	$ 32,117	$ 25,976
Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	883
Post-modification loan balances, payments in default	827	1,010
Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	18,787	1,929
Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	183
Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	32
Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	1,002	127
Commercial | Commercial, industrial and other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	18,948	1,629	29,487	16,011
Commercial | Commercial, industrial and other | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Post-modification loan balances, payments in default	117	244
Commercial | Commercial, industrial and other | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	18,624	1,502
Commercial | Commercial, industrial and other | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Commercial | Commercial, industrial and other | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	32
Commercial | Commercial, industrial and other | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	292	127
Commercial real estate | Construction and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0		701	2,495
Commercial real estate | Construction and development | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Post-modification loan balances, payments in default	0	0
Commercial real estate | Construction and development | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Commercial real estate | Construction and development | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Commercial real estate | Construction and development | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Commercial real estate | Construction and development | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Commercial real estate | Non-construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	1,176	379	6,161
Commercial real estate | Non-construction | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	883
Post-modification loan balances, payments in default	0	603
Commercial real estate | Non-construction | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	293
Commercial real estate | Non-construction | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Commercial real estate | Non-construction | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Commercial real estate | Non-construction | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	98	0	616
Home equity | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Post-modification loan balances, payments in default	0	19
Home equity | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	98
Home equity | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Home equity | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Home equity | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	873	218	874	612
Residential real estate | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Post-modification loan balances, payments in default	710	144
Residential real estate | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	163	35
Residential real estate | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	183
Residential real estate | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Residential real estate | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	710	0
Premium finance receivables | Property and casualty insurance loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	1	$ 676	$ 81
Premium finance receivables | Property and casualty insurance loans | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Post-modification loan balances, payments in default	0	0
Premium finance receivables | Property and casualty insurance loans | Extension of Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	1
Premium finance receivables | Property and casualty insurance loans | Reduction of  Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0	0
Premium finance receivables | Property and casualty insurance loans | Interest Only Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	0
Premium finance receivables | Property and casualty insurance loans | Extension of Term and Reduction of Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification loan balances	$ 0	$ 0

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