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Fair Value Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
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Carrying (Reported) Amount, Fair Value Disclosure [Member] |  |
Fair Value, Financial Instruments [Line Items] |  |
Fair Value, Financial Instruments, Loans, Net | $ 391,693 | $ 363,344
Fair Value, Financial Instruments, Time Deposits | 268,023 | 281,362
Fair Value, Financial Instruments, Long-term Debt | 47,217 | 85,313
Estimate of Fair Value, Fair Value Disclosure [Member] |  |
Fair Value, Financial Instruments [Line Items] |  |
Fair Value, Financial Instruments, Loans, Net | 399,686 | 371,433
Fair Value, Financial Instruments, Time Deposits | 272,419 | 286,644
Fair Value, Financial Instruments, Long-term Debt | 51,880 | 93,360
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Financial Instruments [Line Items] |  |
Fair Value, Financial Instruments, Loans, Net | 0 | 0
Fair Value, Financial Instruments, Time Deposits | 0 | 0
Fair Value, Financial Instruments, Long-term Debt | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Financial Instruments [Line Items] |  |
Fair Value, Financial Instruments, Loans, Net | 0 | 0
Fair Value, Financial Instruments, Time Deposits | 272,419 | 286,644
Fair Value, Financial Instruments, Long-term Debt | 51,880 | 93,360
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Financial Instruments [Line Items] |  |
Fair Value, Financial Instruments, Loans, Net | 399,686 | 371,433
Fair Value, Financial Instruments, Time Deposits | 0 | 0
Fair Value, Financial Instruments, Long-term Debt | $ 0 | $ 0

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