Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 16.3		$ 16.3
Effective income tax rate	(1.20%)	(272.30%)	(1.70%)	(13.70%)
Federal statutory income tax rate			35.00%	35.00%
Unrecognized tax benefits that would impact the provision for income taxes	$ 4.0		$ 4.0
Interest and possible penalties related to uncertain tax positions	$ 0.6		$ 0.6
SWITZERLAND
Income Tax Contingency [Line Items]
Income Tax Holiday, Description			The Company’s operations in Switzerland are subject to a reduced tax rate under the Switzerland tax holiday which requires various thresholds of investment and employment in Switzerland. The Company has met these various thresholds and the Switzerland tax holiday is effective through the end of 2018.