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Fair Value Measurements Notional Amount of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Notional Disclosures [Abstract] |  |
Best efforts contracts and related committed IRLCs | $ 1,445 | $ 5,823
Uncommitted IRLCs | 87,340 | 76,117
FMBSs related to uncommitted IRLCs | 88,000 | 83,000
Best efforts contracts and related mortgage loans held for sale | 6,125 | 14,285
FMBSs related to mortgage loans held for sale | 144,000 | 150,000
Mortgage loans held for sale covered by FMBSs | $ 144,411 | $ 149,980

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- Definition Forward Sales of Mortgage-Backed Securities Related to Mortgage Loans Held for Sale + References No definition available. + Details
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- Definition Forward Sales of Mortgage-Backed Securities related to Uncommitted Interest Rate Lock Commitments + References No definition available. + Details
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- Definition Mortgage Loans Held for Sale Covered by Forward Sales of Mortgage-Backed Securities + References No definition available. + Details
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- Definition Notional Amount of Best Effort Contracts and Related Committed Interest Rate Lock Commitments + References No definition available. + Details
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- Definition Notional Amount of Uncommitted Interest Rate Lock Commitments + References No definition available. + Details
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