UNAUDITED QUARTERLY FINANCIAL DATA (Details) (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	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 29, 2012	Dec. 31, 2011
UNAUDITED QUARTERLY FINANCIAL DATA
Sales	$ 29,919	$ 29,166	$ 29,747	$ 24,396	$ 28,962	$ 25,501	$ 27,975	$ 24,768	$ 113,228	$ 107,206
Gross profit	2,437	5,530	5,491	4,823	4,247	5,557	6,090	4,292
Depreciation, depletion and amortization	689	825	1,045	1,068	1,000	1,012	1,089	1,092	3,627	4,193
Net (loss) income:
Continuing operations	5,154	(191)	(502)	(1,053)	(325)	(316)	(26)	(1,211)	3,408	(1,878)
Discontinued operations	(10)		(9)		(26)	(6)	(36)	(2)	(19)	(70)
Net income (loss)	$ 5,144	$ (191)	$ (511)	$ (1,053)	$ (351)	$ (322)	$ (62)	$ (1,213)	$ 3,389	$ (1,948)
Basic and Diluted (loss) income per share
Continuing operations (in dollars per share)	$ 3.15	$ (0.11)	$ (0.31)	$ (0.64)	$ (0.20)	$ (0.20)	$ (0.02)	$ (0.75)	$ 2.08	$ (1.16)
Discontinued operation (in dollars per share)	$ (0.01)		$ (0.01)		$ (0.02)		$ (0.02)		$ (0.01)	$ (0.04)
Net income (loss) per basic and diluted share (in dollars per share)	$ 3.14	$ (0.11)	$ (0.32)	$ (0.64)	$ (0.22)	$ (0.20)	$ (0.04)	$ (0.75)	$ 2.07	$ (1.20)