Mortgage Servicing Rights ("MSRs") (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value at beginning of the period	$ 200,692	$ 212,664	$ 230,225	$ 147,571
Additions from loans sold with servicing retained	9,706	13,260	23,533	38,871
Servicing rights sold	0	0	(30,170)	0
Estimate of changes in fair value due to:
Early buyout options (“EBO”) exercised	219	0	219	(176)
Payoffs and paydowns	(4,816)	(6,041)	(13,768)	(18,895)
Changes in valuation inputs or assumptions	4,723	9,788	485	62,300
Fair value at end of the period	210,524	229,671	210,524	229,671
Unpaid principal balance of mortgage loans serviced for others	$ 11,885,531	$ 13,925,755	$ 11,885,531	$ 13,925,755