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Subordinated Debt - Schedule of Subordinated Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Principal	$ 614,933	$ 614,928
Unamortized Debt Issuance Costs	(2,316)	(2,468)
Subordinated Debt
Debt Instrument [Line Items]
Principal	107,000	107,000
Unamortized Debt Issuance Costs	(2,239)	(2,468)
Subordinated Debt | 2029 Notes
Debt Instrument [Line Items]
Principal	37,000	37,000
Unamortized Debt Issuance Costs	(902)	(1,020)
Subordinated Debt | 2030 Notes
Debt Instrument [Line Items]
Principal	10,000	10,000
Unamortized Debt Issuance Costs	(166)	(184)
Subordinated Debt | 2031 Notes
Debt Instrument [Line Items]
Principal	60,000	60,000
Unamortized Debt Issuance Costs	$ (1,171)	$ (1,264)

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