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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 | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ (1) | $ 2 | $ (2)
Mortgage Loans Held for Sale [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | (1) | 3 | (1)
Forward Sales or Mortgage Backed Securities [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | 1 | (1) | (1)
Interest Rate Lock Commitments [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | 0 | 0 | 0
Best Efforts Contracts [Member] |  |  |
Financial Instrument [Line Items] |  |  |
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis | $ 0 | $ 0 | $ 0

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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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- Details
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