Other Assets - Other (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Carrying value:
Margin deposits	$ 204,126	$ 288,153
Capitalized software, net	104,939	120,802
Servicing fees receivable, net	41,534	38,676
Other servicing receivables	52,861	54,058
Prepaid expenses	46,012	45,762
Interest receivable	45,622	41,286
Operating lease right-of-use assets	$ 39,639	$ 36,572
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Real estate acquired in settlement of loans	$ 37,607	$ 14,976
Deposits securing Assets sold under agreements to repurchase and Notes payable secured by mortgage servicing assets	11,848	16,697
Furniture, fixtures, equipment and building improvements, net	11,097	12,916
Other	147,110	100,183
Other assets	742,395	770,081
Asset Pledged as Collateral without Right
Carrying value:
Other assets	11,848	16,697
Asset Pledged as Collateral without Right | Deposits.
Carrying value:
Other assets	$ 11,848	$ 16,697