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Stock Based Compensation (Details Textual) - Stock option and restricted stock grants [Member]
$ in Millions
3 Months Ended
Mar. 30, 2019
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized compensation expense $ 289.9
Weighted-average vesting period over which unrecognized compensation expense will be recognized 2 years 3 months 18 days