Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Quarterly Financial Information Disclosure [Abstract]
Total revenue	$ 101,194	$ 109,715	$ 106,460	$ 88,597	$ 83,600	$ 86,570	$ 99,320	$ 96,637	$ 405,966	$ 366,127	$ 332,525
Gross margin	54,102	59,849	58,126	47,832	46,263	50,811	54,975	54,138
Restructuring charges	3,459	6,818	4,068	4,894	1	2	3	11	19,239	17	388
Net (loss) income attributable to stockholders	$ (45,454)	$ (24,862)	$ (35,570)	$ (53,347)	$ 15,419	$ 9,406	$ 11,771	$ 11,984	$ (159,233)	$ 48,580	$ 22,321
Basic net (loss) income per share (in dollars per share)	$ (0.38)	$ (0.21)	$ (0.30)	$ (0.46)	$ 0.13	$ 0.08	$ 0.10	$ 0.10	$ (1.36)	$ 0.41	$ 0.19
Diluted net (loss) income per share (in dollars per share)	$ (0.38)	$ (0.21)	$ (0.30)	$ (0.46)	$ 0.13	$ 0.08	$ 0.10	$ 0.10	$ (1.36)	$ 0.40	$ 0.19