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Fair Value Measurements (Loss) Gain On Assets and Liabilities Measured On A Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Financial Instrument [Line Items] |  |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ (253) | $ 200 | $ (243) | $ 2,319
Mortgage Loans Held for Sale [Member] |  |  |  |
Financial Instrument [Line Items] |  |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | 328 | 1,233 | 431 | 3,383
Forward Sales or Mortgage Backed Securities [Member] |  |  |  |
Financial Instrument [Line Items] |  |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | (838) | (1,350) | (925) | (1,334)
Interest Rate Lock Commitments [Member] |  |  |  |
Financial Instrument [Line Items] |  |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | 341 | 497 | 328 | 725
Best Efforts Contracts [Member] |  |  |  |
Financial Instrument [Line Items] |  |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ (84) | $ (180) | $ (77) | $ (455)

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- Definition The amount of gain (loss) recognized in financial services revenue during the period. + References No definition available. + Details
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