Fair Value Measurements Notional Amount of Financial Instruments (Details) - USD ($) $ in Thousands |
Jun. 30, 2018 |
Dec. 31, 2017 |
---|---|---|
Notional Disclosures [Abstract] | ||
Whole loan contracts and related committed IRLCs | $ 5,330 | $ 2,182 |
Uncommitted IRLCs | 123,897 | 50,746 |
FMBSs related to uncommitted IRLCs | 126,000 | 53,000 |
Whole loan contracts and related mortgage loans held for sale | 8,992 | 80,956 |
FMBSs related to mortgage loans held for sale | 97,000 | 91,000 |
Mortgage loans held for sale covered by FMBSs | $ 97,281 | $ 90,781 |