Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Other Liabilities Disclosure [Abstract]
Accrued expenses	$ 336,223	$ 337,695
Accrued interest payable	54,316	59,102
Accounts payable	91,226	89,339
Dividends payable	44,614	44,741
Trades payable	3,540	31
Liability for GNMA loans sold with an option to repurchase	8,558	10,960
Reserves for loan indemnifications	3,376	4,408
Reserve for operational losses	28,841	27,994
Operating lease liabilities	108,165	126,946
Finance lease liabilities	23,793	25,778
Pension benefit obligation	6,543	6,772
Postretirement benefit obligation	115,363	117,045
Other liabilities	65,765	63,816
Total other liabilities	$ 890,323	$ 914,627
Operating Lease Liability Statement Of Financial Position	Other liabilities	Other liabilities
Finance Lease Liability Statement Of Financial Position	Other liabilities	Other liabilities