Mortgage Servicing Rights ("MSRs") (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value at beginning of the period	$ 224,470	$ 199,146	$ 230,225	$ 147,571
Additions from loans sold with servicing retained	8,720	11,210	13,827	25,611
Servicing rights sold	(30,170)	0	(30,170)	0
Estimate of changes in fair value due to:
Early buyout options (“EBO”) exercised	0	(1)	0	(176)
Payoffs and paydowns	(5,043)	(6,838)	(8,952)	(12,854)
Changes in valuation inputs or assumptions	2,715	9,147	(4,238)	52,512
Fair value at end of the period	200,692	212,664	200,692	212,664
Unpaid principal balance of mortgage loans serviced for others	$ 11,752,223	$ 13,643,623	$ 11,752,223	$ 13,643,623