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Subordinated Notes (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2019	Dec. 31, 2014
Debt Instrument [Line Items]
Outstanding subordinated notes		$ 298,636	$ 298,283
Repayment of subordinated note		0	$ 140,000	$ 0
Costs incurred in connection with the issuance of subordinated notes					$ 3,300	$ 1,300
4.85% subordinated notes maturing in June 2029
Debt Instrument [Line Items]
Proceeds, net of underwriting discount					296,700
5.00% subordinated notes maturing in June 2024
Debt Instrument [Line Items]
Repayment of subordinated note	$ 140,000
Subordinated debt
Debt Instrument [Line Items]
Unamortized balances of costs for issuance of subordinated notes		$ 1,400
Subordinated debt | 4.85% subordinated notes maturing in June 2029
Debt Instrument [Line Items]
Principal amount of debt					$ 300,000
Stated interest rate (as a percent)					4.85%
Subordinated debt | 5.00% subordinated notes maturing in June 2024
Debt Instrument [Line Items]
Stated interest rate (as a percent)	5.00%

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