Other Assets - Other (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Carrying value:
Margin deposits	$ 183,678	$ 288,153
Capitalized software, net	115,958	120,802
Servicing fees receivable, net	44,566	38,676
Other servicing receivables	47,255	54,058
Prepaid expenses	42,546	45,762
Interest receivable	37,791	41,286
Operating lease right-of-use assets	$ 33,728	$ 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	$ 26,582	$ 14,976
Deposits securing Assets sold under agreements to repurchase and Notes payable secured by mortgage servicing assets	13,768	16,697
Furniture, fixtures, equipment and building improvements, net	11,371	12,916
Other	106,120	100,183
Other assets	663,363	770,081
Asset Pledged as Collateral without Right
Carrying value:
Other assets	13,768	16,697
Asset Pledged as Collateral without Right | Deposits.
Carrying value:
Other assets	$ 13,768	$ 16,697