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Earnings Per Share (Details Textuals) (Stock Compensation Plan [Member])
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Apr. 01, 2014
Stock Compensation Plan [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Shares excluded from computation of earning per share 0.1us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockCompensationPlanMember
0.1us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockCompensationPlanMember