Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2012	Jun. 24, 2011	Jun. 29, 2012	Jun. 24, 2011
Condensed Consolidated Statements of Operations [Abstract]
Net revenues	$ 114,825	$ 99,255	$ 212,894	$ 182,438
Cost of sales	84,354	73,000	156,374	134,148
Gross profit	30,471	26,255	56,520	48,290
Operating expenses	21,954	18,551	42,945	35,530
Operating profit	8,517	7,704	13,575	12,760
Interest expense	895	3,343	1,444	6,793
Loss on asset disposal				3
Unrealised gain on interest rate swap				(81)
Income before income taxes	7,622	4,361	12,131	6,045
Provision for income tax expense	3,163	1,708	5,039	2,372
Net income	$ 4,459	$ 2,653	$ 7,092	$ 3,673
Net income per share:
Basic	$ 0.22	$ 0.17	$ 0.35	$ 0.24
Diluted	$ 0.21	$ 0.17	$ 0.34	$ 0.23
Weighted average common shares outstanding:
Basic	20,541,234	15,489,100	20,526,293	15,472,463
Diluted	20,884,977	16,000,000	20,876,995	16,000,000