Other Assets - Other (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Carrying value:
Capitalized software, net	$ 123,908	$ 109,480
Servicing fee receivables, net	18,683	23,672
Other servicing receivables	76,660	113,820
Prepaid Expense	56,542	64,924
Deposits	36,106	36,632
Margin deposits	35,114	100,482
Furniture, fixtures, equipment and building improvements, net	32,245	31,677
Real estate acquired in settlement of loans	6,984	7,474
Interest receivable	4,882	9,688
Other	154,930	118,767
Other assets	546,054	616,616
Assets pledged to secure Obligation under capital lease:
Capitalized software, net	3,922	4,546
Furniture, fixture, equipment and building improvements, net	3,775	4,116
Assets securing capital lease	$ 43,803	$ 45,294