Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Consolidated Statements Of Operations [Abstract]
Sales	$ 452,639	$ 443,134	$ 159,757
Cost of goods sold	393,647	383,993	151,741
Gross profit	58,992	59,141	8,016
Operating expenses:
Research and development	5,556	5,487	3,212
Sales and marketing	7,257	6,887	4,693
General and administrative	22,633	21,290	16,186
Total operating expenses	35,446	33,664	24,091
Income (loss) from operations	23,546	25,477	(16,075)
Interest and other expense, net	(1,106)	(667)	(791)
Income (loss) before provision (benefit) for income taxes	22,440	24,810	(16,866)
Income tax provision (benefit)	(1,294)	4,713	3,160
Net income (loss)	$ 23,734	$ 20,097	$ (20,026)
Net income (loss) per share:
Basic	$ 1.05	$ 0.92	$ (0.94)
Diluted	$ 1.01	$ 0.87	$ (0.94)
Shares used in computing net income (loss) per share
Basic	22,689	21,799	21,403
Diluted	23,437	22,975	21,403