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Shareholders’ Equity, Other Comprehensive Income and Earnings Per Common Share - Antidilutive Securities (Details)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Shareholders' Equity, Other Comprehensive Income and Earnings Per Common Share      
Antidilutive securities excluded from earnings per share 150us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 18us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 215us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount