Loans and Allowance for Credit Losses - Schedule of Collateral Type Concentration of SBA Loans (Details) - Financing Receivable - Collateral Concentration Risk	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Concentration Risk [Line Items]
Concentration risk (in percent)	100.00%	100.00%
SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	100.00%	100.00%
Lodging \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	20.70%	21.20%
Grocery Stores \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	8.40%	8.70%
Eating Places \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	7.60%	7.60%
Child Day Care Services \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	4.90%	5.20%
General Freight Trucking, Local \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	4.40%	4.40%
Gasoline Service Stations \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	2.90%	2.80%
Offices of Physicians \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	2.30%	2.30%
Coin-Operated Laundries and Drycleaners \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	2.10%	2.10%
Car Washes \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	1.80%	1.70%
Funeral Service & Crematories \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	0.90%	0.90%
Other \| SBA loans
Concentration Risk [Line Items]
Concentration risk (in percent)	44.00%	43.10%