Selected Quarterly Financial Data Selected Quarterly Financial Data - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended						12 Months Ended
	Dec. 31, 2015	Oct. 02, 2015	Apr. 03, 2015	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 3.1			$ 0.3	$ 4.2	$ 24.5	$ 3.1
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations							0.9	$ 9.5	$ 1.3
Israel Tax Authority [Member]
Income Tax Contingency [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount							(0.9)
Internal Revenue Service (IRS) [Member] | Domestic Tax Authority [Member] | Tax Year 2008 through 2010 [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		$ 0.5			$ 9.0
VJU Gmbh [Member]
Income Tax Contingency [Line Items]
Cost-method Investments, Other than Temporary Impairment			$ 2.5				$ 2.5