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. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 24, 2011	Jun. 25, 2011	Mar. 26, 2011	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Quarterly Financial Data [Line Items]
Net sales	$ 50,714	$ 57,748	$ 59,404	$ 53,296	$ 66,559	$ 71,813	$ 80,896	$ 89,700	$ 221,162	$ 308,968	$ 322,667
Gross profit	16,649	18,126	17,664	15,539	21,412	23,355	26,547	28,815	67,978	100,129
Net income (loss)	$ (5,161)	$ (1,749)	$ (2,109)	$ (3,224)	$ 719	$ 3,376	$ 5,050	$ 6,574	$ (12,243)	$ 15,719	$ 24,644
Net income (loss) per share
Basic	$ (0.21)	$ (0.07)	$ (0.09)	$ (0.13)	$ 0.03	$ 0.14	$ 0.21	$ 0.27	$ (0.50)	$ 0.65	$ 1.04
Diluted	$ (0.21)	$ (0.07)	$ (0.09)	$ (0.13)	$ 0.03	$ 0.14	$ 0.21	$ 0.27	$ (0.50)	$ 0.64	$ 1.02