Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 96,168	$ 94,441	$ 77,850	$ 64,864	$ 61,135	$ 55,977	$ 62,235	$ 52,227	$ 333,323	$ 231,574	$ 206,312
Gross profit	31,375	33,176	25,484	22,200	17,247	12,684	19,515	13,942	112,235	63,388
Income (loss) from continuing operations	1,337	6,921	931	(3,354)	(6,578)	(11,113)	(4,334)	(12,235)	5,835	(34,260)	(12,122)
Net income (loss)	$ 374	$ 7,519	$ 4,163	$ (3,348)	$ (6,450)	$ (10,820)	$ (4,045)	$ (12,103)	$ 8,708	$ (33,418)	$ (12,243)
Basic:
Income (loss) from continuing operations	$ 0.05	$ 0.28	$ 0.04	$ (0.13)	$ (0.27)	$ (0.44)	$ (0.17)	$ (0.50)	$ 0.23	$ (1.37)	$ (0.50)
Net income (loss)	$ 0.01	$ 0.30	$ 0.16	$ (0.13)	$ (0.26)	$ (0.43)	$ (0.16)	$ (0.49)	$ 0.34	$ (1.34)	$ (0.50)
Diluted:
Income (loss) from continuing operations	$ 0.05	$ 0.27	$ 0.04	$ (0.13)	$ (0.27)	$ (0.44)	$ (0.17)	$ (0.50)	$ 0.22	$ (1.37)	$ (0.50)
Net income (loss)	$ 0.01	$ 0.29	$ 0.16	$ (0.13)	$ (0.26)	$ (0.43)	$ 0.43	$ (0.49)	$ 0.33	$ (1.34)	$ (0.50)