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Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Dividend $ 0.11us-gaap_CommonStockDividendsPerShareDeclared
Accumulated Other Comprehensive Income (Loss) [Member]  
Pension and postretirement plans, net of tax $ 1us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Retained Earnings [Member]  
Dividend $ 0.11us-gaap_CommonStockDividendsPerShareDeclared
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember