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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
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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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Dec. 31, 2011
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| Income tax associated with reclassification adjustment | $ 3,800,000 | $ 2,000,000 | $ 1,800,000 |
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Supplemental Director Retirement Plan [Member]
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| Provision for income tax associated with the reclassification adjustments on salaries and employee benefits | 31,000 | 28,000 | 10,000 |
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Long-Term Health Care Plan [Member]
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| Provision for income tax associated with the reclassification adjustments on salaries and employee benefits | $ 8,000 | $ 12,000 | $ 6,000 |