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Branch Acquisition and Divestiture (Details) (USD $)
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12 Months Ended | 0 Months Ended | |||
|---|---|---|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Oct. 04, 2013
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Oct. 26, 2012
branch
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| Business Acquisition [Line Items] | |||||
| Gain on branch divestiture | $ 0 | $ 2,742,000 | $ 0 | ||
| Branch acquisition and divestiture costs | 0 | 374,000 | 2,324,000 | ||
| Branch Acquisition [Member] | |||||
| Business Acquisition [Line Items] | |||||
| Number of full-service branches acquired | 15 | ||||
| Payments to Acquire Businesses, Gross | 12,000,000 | ||||
| Premium received upon sale of branch | 3,300,000 | ||||
| Branches To Be Disposed Of [Member] | |||||
| Business Acquisition [Line Items] | |||||
| Deposits and Borrowings Divested | 85,900,000 | ||||
| Loans Divested | 46,000,000 | ||||
| Real Estate and Equipment Divested | 602,000 | ||||
| Premium on Deposits Sold | 3.50% | ||||
| Gain on branch divestiture | $ 2,700,000 | ||||