Fair Value Measurements Notional Amount of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Notional Disclosures [Abstract]
Whole loan contracts and related committed IRLCs	$ 3,401	$ 0
Uncommitted IRLCs	320,905	215,696
FMBSs related to uncommitted IRLCs	344,000	228,000
Whole loan contracts and related mortgage loans held for sale	10,310	17,667
FMBSs related to mortgage loans held for sale	247,000	252,000
Mortgage loans held for sale covered by FMBSs	$ 231,158	$ 276,140