Other Assets - Other (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Carrying value:
Capitalized software, net	$ 156,047	$ 157,460
Margin deposits	153,533	55,968
Servicing fee receivables, net	31,546	31,356
Other servicing receivables	43,312	24,854
Prepaid expenses	32,068	38,780
Interest receivable	39,091	24,110
Furniture, fixtures, equipment and building improvements, net	23,731	28,382
Deposits securing Assets sold under agreements to repurchase and Notes payable secured by mortgage servicing assets	38,118	12,277
Real estate acquired in settlement of loans	12,171	11,497
Derivative settlements receivable	6,753	1,522
Other	57,328	31,701
Other assets	593,698	417,907
Asset Pledged as Collateral without Right
Carrying value:
Other assets	38,118	12,277
Asset Pledged as Collateral without Right | Deposits.
Carrying value:
Other assets	38,118	12,277
Asset Pledged as Collateral without Right | Note Payable
Carrying value:
Other assets	$ 31,561	$ 12,277