Other Assets - Other (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying value:
Capitalized software, net	$ 152,655	$ 109,480
Derivative settlements receivable	115,384	20,026
Prepaid Expense	47,008	64,924
Furniture, fixtures, equipment and building improvements, net	29,928	31,677
Servicing fee receivables, net	25,861	23,672
Other servicing receivables	19,928	113,820
Interest receivable	18,793	9,688
Deposits	9,886	36,632
Real estate acquired in settlement of loans	7,963	7,474
Margin deposits	1,539	100,482
Other	44,582	98,741
Other assets	473,527	616,616
Assets pledged to secure Obligation under capital lease:
Capitalized software, net		4,546
Furniture, fixture, equipment and building improvements, net		4,116
Assets securing capital lease	$ 9,886	$ 45,294