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Stock Based Compensation (Details Textual) - Stock option and restricted stock grants [Member]
$ in Millions
9 Months Ended
Oct. 03, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized compensation expense, net of forfeitures $ 167.7
Weighted-average vesting period over which unrecognized compensation expense will be recognized 2 years 2 months