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Fair Value Measurements (Loss) Gain On Assets and Liabilities Measured On A Recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ (3,223) | $ (727) | $ 2,445
Mortgage Loans Held for Sale [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | (3,591) | (590) | 3,191
Forward Sales or Mortgage Backed Securities [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | 323 | 89 | (927)
Interest Rate Lock Commitments [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | (71) | 32 | 607
Best Efforts Contracts [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ 116 | $ (258) | $ (426)

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