CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) [Abstract]
Net sales	$ 6,475,000	$ 7,509,000	$ 12,922,000	$ 13,671,000
Cost of sales	3,978,000	4,675,000	7,934,000	8,450,000
Gross profit	2,497,000	2,834,000	4,988,000	5,221,000
Selling, general and administrative expenses	2,355,000	2,575,000	4,886,000	5,172,000
Costs related to non-renewal of senior officer contract	0	0	0	1,194,000
Interest expense	15,000	36,000	32,000	70,000
Investment and other income, net	(2,000)	(4,000)	(5,000)	(97,000)
Income (loss) before income tax provision	129,000	227,000	75,000	(1,118,000)
Income tax provision	20,000	28,000	46,000	58,000
NET INCOME (LOSS)	109,000	199,000	29,000	(1,176,000)
Change in unrealized gains and (losses) on marketable securities, net of income tax	2,000	2,000	6,000	17,000
Comprehensive income (loss)	$ 111,000	$ 201,000	$ 35,000	$ (1,159,000)
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.02	$ 0.04	$ 0.01	$ (0.26)
Diluted (in dollars per share)	$ 0.02	$ 0.04	$ 0.01	$ (0.26)