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Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Sales	$ 16,466	$ 15,866	$ 15,942	$ 15,509	$ 16,381	$ 15,266	$ 16,269	$ 14,849
Gross profit	11,168	11,176	11,045	10,901	11,429	10,450	10,861	9,629	44,291	42,369	35,076
Net income	$ (1,414)	$ (90)	$ (491)	$ 232	$ 109	$ 77	$ 861	$ 300	$ (1,763)	$ 1,348	$ 53
Income per share from continuing operations - basic	$ (0.04)	$ 0.00	$ (0.01)	$ 0.01	$ 0.00	$ 0.00	$ 0.02	$ 0.01	$ (0.05)	$ 0.04	$ (0.12)
Income per share from continuing operations - diluted	$ (0.04)	$ 0.00	$ (0.01)	$ 0.01	$ 0.00	$ 0.00	$ 0.02	$ 0.01	$ (0.05)	$ 0.04	$ (0.12)
Net income per share - basic	$ (0.04)	$ 0.00	$ (0.01)	$ 0.01	$ 0.00	$ 0.00	$ 0.02	$ 0.01	$ (0.05)	$ 0.04	$ 0.00
Net income per share - diluted	$ (0.04)	$ 0.00	$ (0.01)	$ 0.01	$ 0.00	$ 0.00	$ 0.02	$ 0.01	$ (0.05)	$ 0.04	$ 0.00

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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