Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest rate cap hedges recognized in other comprehensive income, net of tax	$ (408)	$ 0
Other Current Assets
Derivative [Line Items]
Derivative asset	0		$ 1
Other Long Term Assets
Derivative [Line Items]
Derivative asset	391		962
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate cap premiums | Other Current Assets
Derivative [Line Items]
Derivative asset	0		1
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate cap premiums | Other Long Term Assets
Derivative [Line Items]
Derivative asset	$ 391		$ 962