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Borrowings - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total senior and subordinated debt	$ 744,718	$ 899,071
Long-term debt	739,454	909,185
2029 subordinated notes | Subordinated Debt
Debt Instrument [Line Items]
Total senior and subordinated debt	0	274,000
Premium on notes	0	4,435
2030 subordinated notes | Subordinated Debt
Debt Instrument [Line Items]
Total senior and subordinated debt	0	225,000
Premium on notes	0	7,239
2035 subordinated notes | Subordinated Debt
Debt Instrument [Line Items]
Total senior and subordinated debt	350,000	0
Discount on notes	(2,545)	0
Debt issuance cost on notes	(1,527)	0
2033 junior subordinated notes
Debt Instrument [Line Items]
Total senior and subordinated debt	77,320	77,320
Long-term Debt
Debt Instrument [Line Items]
Basis adjustment	17,400	22,800
2029 senior notes | Senior Notes
Debt Instrument [Line Items]
Total senior and subordinated debt	317,398	322,751
Discount on notes	(323)	(423)
Debt issuance cost on notes	$ (869)	$ (1,137)

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