Mortgage Banking Activities Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Mortgage Banking Revenue [Abstract]
Net realized gains (losses) on sale of mortgage loans	$ (1,072)	$ 16,177	$ 8,969	$ 62,960
Net change in unrealized gain (loss) on mortgage loans held for sale	(6,244)	(1,365)	(9,764)	(6,537)
Net change in the fair value of mortgage loan commitments	(3,174)	(1,953)	(5,474)	(12,186)
Net change in the fair value of forward sales contracts	8,084	2,544	8,414	6,457
Total production revenue	(2,406)	15,403	2,145	50,694
Servicing revenue	13,688	10,883	37,155	33,924
Total mortgage banking revenue	$ 11,282	$ 26,286	$ 39,300	$ 84,618