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Fair Value of Assets and Liabilities, Part II (Details) (USD $)
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9 Months Ended | 9 Months Ended | 9 Months Ended | |||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2013
Carrying Amount [Member]
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Dec. 31, 2012
Carrying Amount [Member]
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Sep. 30, 2013
Fair Value [Member]
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Dec. 31, 2012
Fair Value [Member]
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Sep. 30, 2013
Fair Value, Measurements, Nonrecurring [Member]
Carrying Amount [Member]
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Sep. 30, 2013
Fair Value, Measurements, Nonrecurring [Member]
Fair Value [Member]
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Sep. 30, 2013
Quoted Prices in Active Markets for Identical Assets (Level 1)
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Dec. 31, 2012
Quoted Prices in Active Markets for Identical Assets (Level 1)
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Sep. 30, 2013
Significant Other Observable Inputs (Level 2)
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Dec. 31, 2012
Significant Other Observable Inputs (Level 2)
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Sep. 30, 2013
Significant Unobservable Inputs (Level 3)
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Dec. 31, 2012
Significant Unobservable Inputs (Level 3)
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Sep. 30, 2013
Trust preferred securities
Significant Unobservable Inputs (Level 3)
Discounted Cash Flow [Member]
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Sep. 30, 2013
Trust preferred securities
Significant Unobservable Inputs (Level 3)
Minimum [Member]
Discounted Cash Flow [Member]
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Sep. 30, 2013
Trust preferred securities
Significant Unobservable Inputs (Level 3)
Weighted Average [Member]
Discounted Cash Flow [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Impaired loans (collateral dependent)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Impaired loans (collateral dependent)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Significant Other Observable Inputs (Level 2)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Impaired loans (collateral dependent)
Significant Other Observable Inputs (Level 2)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Significant Unobservable Inputs (Level 3)
Minimum [Member]
Third Party Valuations [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Significant Unobservable Inputs (Level 3)
Maximum [Member]
Third Party Valuations [Member]
|
Sep. 30, 2013
Impaired loans (collateral dependent)
Significant Unobservable Inputs (Level 3)
Weighted Average [Member]
Third Party Valuations [Member]
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Sep. 30, 2013
Impaired loans (collateral dependent)
Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Impaired loans (collateral dependent)
Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Foreclosed assets held for sale
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Foreclosed assets held for sale
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Significant Other Observable Inputs (Level 2)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Foreclosed assets held for sale
Significant Other Observable Inputs (Level 2)
Fair Value, Measurements, Nonrecurring [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Significant Unobservable Inputs (Level 3)
Minimum [Member]
Third Party Valuations [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Significant Unobservable Inputs (Level 3)
Maximum [Member]
Third Party Valuations [Member]
|
Sep. 30, 2013
Foreclosed assets held for sale
Significant Unobservable Inputs (Level 3)
Weighted Average [Member]
Third Party Valuations [Member]
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Sep. 30, 2013
Foreclosed assets held for sale
Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Nonrecurring [Member]
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Dec. 31, 2012
Foreclosed assets held for sale
Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Nonrecurring [Member]
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ||||||||||||||||||||||||||||||||||||||||||
| Assets, Fair Value Disclosure, Nonrecurring | $ 2,752,000 | $ 2,681,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 174,000 | $ 2,681,000 | $ 93,000 | $ 70,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 93,000 | $ 70,000 | ||||||||||||||||||||||||||
| Foreclosed Assets Held for Sale [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Other real estate owned | 430,000 | 1,187,000 | 430,000 | 93,000 | ||||||||||||||||||||||||||||||||||||||
| Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Assets, Fair Value Disclosure, Recurring | 174,000 | |||||||||||||||||||||||||||||||||||||||||
| Discount rate (in hundredths) | 18.10% | 18.10% | ||||||||||||||||||||||||||||||||||||||||
| Constant prepayment rate (in hundredths) | 1.34% | [1] | ||||||||||||||||||||||||||||||||||||||||
| Cumulative projected prepayments (in hundredths) | 20.50% | 20.50% | ||||||||||||||||||||||||||||||||||||||||
| Probability of default (in hundredths) | 0.32% | 0.30% | ||||||||||||||||||||||||||||||||||||||||
| Projected cures given deferral (in hundredths) | 22.99% | 23.00% | ||||||||||||||||||||||||||||||||||||||||
| Loss severity (in hundredths) | 95.20% | 95.20% | ||||||||||||||||||||||||||||||||||||||||
| Discount to reflect realizable value (in hundredths) | 0.00% | 40.00% | 20.00% | |||||||||||||||||||||||||||||||||||||||
| Discount to reflect realizable value less estimated selling costs (in hundredths) | 0.00% | 40.00% | 35.00% | |||||||||||||||||||||||||||||||||||||||
| Financial Assets [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Cash and due from banks | 31,482,000 | 62,213,000 | 31,482,000 | 62,213,000 | 31,482,000 | 62,213,000 | 0 | 0 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Federal funds sold | 497,000 | 20,499,000 | 497,000 | 20,499,000 | 497,000 | 20,499,000 | 0 | 0 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Certificates of deposit investments | 0 | 6,665,000 | 0 | 6,669,000 | 0 | 6,669,000 | 0 | 0 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Available-for-sale securities | 500,304,000 | 508,309,000 | 500,304,000 | 508,309,000 | 70,000 | 60,000 | 500,060,000 | 507,664,000 | 174,000 | 585,000 | ||||||||||||||||||||||||||||||||
| Loans held for sale | 1,101,000 | 212,000 | 1,101,000 | 212,000 | 0 | 0 | 1,101,000 | 212,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Loans net of allowance for loan losses | 929,013,000 | 899,077,000 | 940,957,000 | 908,281,000 | 0 | 0 | 0 | 0 | 940,957,000 | 908,281,000 | ||||||||||||||||||||||||||||||||
| Interest receivable | 6,888,000 | 6,775,000 | 6,888,000 | 6,775,000 | 0 | 0 | 6,888,000 | 6,775,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Federal Reserve Bank stock | 1,522,000 | 1,522,000 | 1,522,000 | 1,522,000 | 0 | 0 | 1,522,000 | 1,522,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Federal Home Loan Bank stock | 3,391,000 | 3,293,000 | 3,391,000 | 3,293,000 | 0 | 0 | 3,391,000 | 3,293,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Financial Liabilities [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Deposits | 1,263,941,000 | 1,274,065,000 | 1,264,202,000 | 1,275,127,000 | 0 | 0 | 1,055,667,000 | 1,066,788,000 | 208,535,000 | 208,339,000 | ||||||||||||||||||||||||||||||||
| Securities sold under agreements to repurchase | 78,114,000 | 113,484,000 | 78,118,000 | 113,490,000 | 0 | 0 | 78,118,000 | 113,490,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Interest payable | 254,000 | 341,000 | 254,000 | 341,000 | 0 | 0 | 254,000 | 341,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Federal Home Loan Bank borrowings | 20,000,000 | 5,000,000 | 20,565,000 | 5,719,000 | 0 | 0 | 20,565,000 | 5,719,000 | 0 | 0 | ||||||||||||||||||||||||||||||||
| Junior subordinated debentures | $ 20,620,000 | $ 20,620,000 | $ 12,180,000 | $ 11,386,000 | $ 0 | $ 0 | $ 12,180,000 | $ 11,386,000 | $ 0 | $ 0 | ||||||||||||||||||||||||||||||||
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