CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) [Abstract]
Net sales	$ 6,162,000	$ 6,812,000
Cost of sales	3,775,000	3,885,000
Gross profit	2,387,000	2,927,000
Selling, general and administrative expenses	2,597,000	2,368,000
Costs related to non-renewal of chief operating officer contract	1,194,000	0
Interest expense	34,000	53,000
Investment and other income, net	(93,000)	(34,000)
(Loss) income before income tax provision	(1,345,000)	540,000
Income tax provision	30,000	16,000
NET (LOSS) INCOME	(1,375,000)	524,000
Change in unrealized gains and (losses) on marketable securities, net of income tax	15,000	4,000
Comprehensive (loss) income	$ (1,360,000)	$ 528,000
Net (loss) income per common share:
Basic (in dollars per share)	$ (0.30)	$ 0.11
Diluted (in dollars per share)	$ (0.30)	$ 0.11