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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) [Abstract]    
Net sales $ 29,438,000 $ 31,041,000
Cost of sales 17,777,000 17,812,000
Gross profit 11,661,000 13,229,000
Selling, general and administrative expenses 9,732,000 9,955,000
Costs related to non-renewal of senior officer contract 1,194,000 0
Goodwill impairment 820,000 0
Interest expense 124,000 189,000
Investment and other income, net (144,000) (149,000)
Total expenses, net 11,726,000 9,995,000
(Loss) income before income tax provision (65,000) 3,234,000
Income tax provision 70,000 87,000
Net (loss) income (135,000) 3,147,000
Other comprehensive income (loss): change in unrealized gains and (losses) on marketable securities, net of income tax 15,000 (37,000)
Comprehensive (loss) income $ (120,000) $ 3,110,000
Net income (loss) per common share:    
Basic (in dollars per share) $ (0.03) $ 0.67
Diluted (in dollars per share) $ (0.03) $ 0.67