Equity - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment fair value changes, net	$ (6,120)	$ 45,087
Realized gains, net	(2,581)	(2,716)
Interest expense	136,298	102,552
Net income before provision for income taxes	28,457	108,800
Reclassification out of Accumulated Other Comprehensive Income | Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment fair value changes, net	705	(374)
Realized gains, net	(1,397)	(2,421)
Net income before provision for income taxes	(692)	(2,795)
Reclassification out of Accumulated Other Comprehensive Income | Interest Rate Agreements Accounted for as Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	1,018	1,018
Net income before provision for income taxes	$ 1,018	$ 1,018