Interest Income and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest Income (Expense), Net [Abstract]
Loans held for investment, net	$ 313,034	$ 150,351	$ 608,086	$ 271,688
Investment securities	116,204	46,046	224,531	80,308
Margin balances	15,352	8,732	30,223	15,644
Financial instruments owned	4,631	4,057	8,352	9,477
Other	33,549	3,568	63,142	1,072
Total interest income	482,770	212,754	934,334	378,189
Bank deposits	171,362	3,599	308,650	4,528
Senior notes	12,506	11,274	25,012	22,699
Other	7,222	2,461	12,426	(436)
Total interest expense	$ 191,090	$ 17,334	$ 346,088	$ 26,791