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Fair Value Measurements Narrative (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||
| Fair Value Inputs, Market Risk Premium | 25.00% | ||||||
| Fair Value, Assets, Level 1 to Level 2 Transfers, Amount | $ 32,243 | ||||||
| Asset, Level 2 to Level 1 transfers | 2,735 | ||||||
| Impaired loan recorded investment | 2,915 | [1] | 3,789 | ||||
| Loans guaranteed | 2,328 | 2,354 | |||||
| Write-offs against allowance for loan losses | $ 1 | $ 1,589 | |||||
| Fair Value Measurements, EBITDA Multiple | 3 | ||||||
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