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Consolidated Statements of Shareholders' Equity Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)
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12 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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| Cash dividends per share | $ 0.57us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.46us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.44us-gaap_CommonStockDividendsPerShareCashPaid |
| X | ||||||||||
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- Definition
Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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