Income Taxes (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jul. 02, 2017	Apr. 02, 2017	Mar. 27, 2016	Dec. 27, 2015	Apr. 02, 2017	Mar. 27, 2016
Effective tax rate (as a percent)					30.40%	38.20%
Income tax benefit		$ (12,990,000)	$ (8,661,000)		$ (23,348,000)	$ (16,692,000)
Tax benefit recognized in connection with the IRS examination		1,200,000
Acquisition and integration expenses and debt pre-payment fees			13,300,000
Income tax benefit on business combination acquisition and integration expenses and debt pre-payment fees			0
Non-deductible expenses related to business acquisition			6,400,000
Business combination integration costs and debt pre-payment fees			$ 6,900,000
R&D Credits				$ 2,000,000
Effective income tax rate excluding R&D credits (as a percent)			32.70%			32.70%
Foreign
Reserve for uncertain tax position in connection with IRS examination		2,300,000
Period of projected cumulative pre-tax losses in certain foreign jurisdictions					36 months
Loss carry-forwards, valuation allowance		23,400,000			$ 23,400,000
Forecast
Estimated amount of payment to IRS	$ 20,000,000
Accounting Standards Update 2016-09
Income tax benefit		$ 900,000			$ 2,700,000