Mortgage Banking Activities Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Mortgage Banking Revenue [Abstract]
Net realized gains (losses) on sale of mortgage loans	$ (1,731)	$ 6,883
Net change in unrealized gain (loss) on mortgage loans held for sale	370	(5,827)
Net change in the fair value of mortgage loan commitments	1,640	(3,298)
Net change in the fair value of forward sales contracts	(912)	7,297
Total production revenue	(633)	5,055
Servicing revenue	15,000	11,595
Total mortgage banking revenue	$ 14,367	$ 16,650