Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Accrued expenses	$ 266,300	$ 337,284
Accrued interest payable	47,297	39,288
Accounts payable	84,501	76,456
Dividends payable	39,793	39,525
Trades payable	14,761	9,461
Liability for GNMA loans sold with an option to repurchase	8,298	14,271
Reserves for loan indemnifications	6,941	7,520
Reserve for operational losses	28,723	39,266
Operating lease liabilities	129,023	137,290
Finance lease liabilities	23,180	24,737
Pension benefit obligation	6,050	8,290
Postretirement benefit obligation	118,121	118,336
Other liabilities	71,020	65,222
Total other liabilities	$ 844,008	$ 916,946
Operating Lease Liability Statement Of Financial Position	Other liabilities	Other liabilities
Finance Lease Liability Statement Of Financial Position	Other liabilities	Other liabilities