CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) [Abstract]
Net sales	$ 7,864,000	$ 7,850,000	$ 21,535,000	$ 22,946,000
Cost of sales	4,805,000	4,464,000	13,255,000	13,317,000
Gross profit	3,059,000	3,386,000	8,280,000	9,629,000
Selling, general and administrative expenses	2,255,000	2,644,000	7,427,000	7,399,000
Costs related to non-renewal of senior officer contract	0	0	1,194,000	0
Interest expense	31,000	45,000	101,000	151,000
Investment and other income, net	(5,000)	(28,000)	(102,000)	(133,000)
(Loss) income before income tax provision	778,000	725,000	(340,000)	2,212,000
Income tax provision	15,000	28,000	73,000	74,000
NET (LOSS) INCOME	763,000	697,000	(413,000)	2,138,000
Other Comprehensive Income: change in unrealized gains and (losses) on marketable securities, net of income tax	4,000	(22,000)	21,000	(46,000)
Comprehensive (loss) income	$ 767,000	$ 675,000	$ (392,000)	$ 2,092,000
Net (loss) income per common share:
Basic (in dollars per share)	$ 0.17	$ 0.15	$ (0.09)	$ 0.46
Diluted (in dollars per share)	$ 0.17	$ 0.15	$ (0.09)	$ 0.46