CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
NET SALES	$ 142,120	$ 102,688
Cost of goods sold	119,684	86,254
Gross profit	22,436	16,434
Operating expenses:
Warehouse and delivery	4,536	3,674
Selling, general and administrative	6,969	4,918
Amortization of intangible assets	519	316
Gain on sale of fixed assets	(4)	0
Total operating expenses	12,020	8,908
OPERATING INCOME	10,416	7,526
Stock warrants revaluation	0	1,670
Interest expense, net	552	845
Income before income taxes	9,864	5,011
Income taxes	3,845	0
NET INCOME	$ 6,019	$ 5,011
BASIC NET INCOME PER COMMON SHARE (in dollars per share)	$ 0.55	$ 0.49
DILUTED NET INCOME PER COMMON SHARE (in dollars per share)	$ 0.55	$ 0.47
Weighted average shares outstanding - basic (in shares)	10,904	10,219
Weighted average shares outstanding - diluted (in shares)	10,985	10,707