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Consolidated Statements of Cash Flows (USD $)
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Operating activities:    
Net loss $ (647,000) $ (750,000)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 140,000 161,000
Provision for sales returns and doubtful accounts 59,000 19,000
Stock based compensation 19,000 13,000
Changes in assets and liabilities:    
Restricted cash 100,000 100,000
Trade accounts receivable (76,000) (306,000)
Inventory 736,000 1,048,000
Prepaid expenses and other current assets (14,000) (3,000)
Trade accounts payable 27,000 224,000
Accrued liabilities (35,000) 33,000
Other assets and liabilities (10,000) (2,000)
Total adjustments 946,000 1,287,000
Net cash provided by operating activities 299,000 537,000
Investing activities:    
Acquisition of property & equipment (9,000) (16,000)
Payments for investment in joint venture (294,000) 0
Payments for investment in securities 0 (350,000)
Return of capital from investment in joint venture 159,000 0
All other investing activity 0 0
Net cash used for investing activities (144,000) (366,000)
Impact of exchange rates on cash 3,000 2,000
Net increase in cash and cash equivalents 158,000 173,000
Cash and cash equivalents, beginning of period 2,475,000 1,905,000
Cash and cash equivalents, end of period 2,633,000 2,078,000
Supplemental disclosures of cash flow information:    
Cash paid for interest 39,000 39,000
Cash paid for income taxes, net $ 3,000 $ 3,000