Income Taxes Domestic and foreign components of (loss) income before income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	$ (22,499)	$ 18,550	$ 11,432
Domestic Tax Authority [Member]
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	(21,674)	18,586	11,531
Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	$ (825)	$ (36)	$ (99)