Fair Value Measurements Notional Amount of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Notional Disclosures [Abstract]
Whole loan contracts and related committed IRLCs	$ 14,587	$ 782
Uncommitted IRLCs	470,964	228,831
FMBSs related to uncommitted IRLCs	453,000	223,000
Whole loan contracts and related mortgage loans held for sale	5,005	3,785
FMBSs related to mortgage loans held for sale	200,000	251,000
Mortgage loans held for sale covered by FMBSs	$ 198,937	$ 263,088