Fair Value Measurements (Narrative) (Details)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Fair Value Inputs, Prepayment Rate | 1.00% | 1.00% |
Annual prepayments maturity | 100.00% | 100.00% |
Additional basis points | 150.00% | 150.00% |
Minimum [Member]
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Collateral discount | 20.00% | 20.00% |
Maximum [Member]
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Collateral discount | 30.00% | 30.00% |