Senior Notes, Convertible Notes and Trust Preferred Securities - Schedule of Maturities of Long-term Debt (Details) - Senior Notes, Convertible Notes, and Trust Preferred Securities $ in Thousands	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
2022	$ 0
2023	0
2024	198,932
2025	0
2026	0
Thereafter	929,120
Long-term debt, gross	1,128,052
Unamortized debt discounts	(3,655)
Unamortized debt issuance costs	(8,871)
Long-term debt	$ 1,115,526

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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