Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Mortgage Banking Revenue [Abstract]
Net realized gains on sales of mortgage loans	$ 7,416	$ 76,282	$ 107,847
Net change in unrealized gain on mortgage loans held for sale	(4,468)	(5,818)	6,697
Net change in fair value of mortgage loan commitments	(5,113)	(14,268)	15,202
Net change in the fair value of forward sales contracts	327	4,516	(3,898)
Total mortgage production revenue	(1,838)	60,712	125,848
Servicing revenue	51,203	45,184	56,512
Total mortgage banking revenue	$ 49,365	$ 105,896	$ 182,360