Organization, Activities and Significant Accounting Policies - Loans Receivable and Allowance for Credit Losses (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Organization, Activities and Significant Accounting Policies
Accrued interest receivable	$ 23,600,000	$ 18,100,000
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Peer group financial institution size	$ 10,000,000,000
Allowances for credit losses individual impairment threshold amount	$ 500,000
Loans to value percentage, excluded from individually evaluated loans	60.00%
Allowance for credit losses related to other investments	$ 0	$ 0
Consumer
Organization, Activities and Significant Accounting Policies
Prepayment speed forecast (in percentage)	10.10%	16.80%
Increase in allowance due to prepayment speed forecast	$ 1,300,000