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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Operating activities:    
Net loss $ (595,000) $ (1,138,000)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Depreciation and amortization 155,000 155,000
Provision for inventory reserves 600,000 900,000
Provision for sales returns and doubtful accounts 96,000 3,000
Stock based compensation 24,000 23,000
Loss on investments 297,000 226,000
Impairment of investment in securities 0 305,000
Changes in assets and liabilities:    
Trade accounts receivable 147,000 (26,000)
Inventory (1,129,000) 765,000
Prepaid expenses and other current assets (33,000) (18,000)
Trade accounts payable 640,000 (174,000)
Accrued liabilities 67,000 (46,000)
Other assets and liabilities 5,000 4,000
Total adjustments 869,000 2,117,000
Net cash provided by operating activities 274,000 979,000
Investing activities:    
Acquisition of property & equipment (37,000) (14,000)
Payments for investment in joint ventures 0 (245,000)
Net cash used for investing activities (37,000) (259,000)
Financing activities:    
Repurchase of Class A common stock (16,000) 0
Net cash used for financing activities (16,000) 0
Impact of exchange rates on cash 1,000 26,000
Net increase in cash and cash equivalents 222,000 746,000
Cash and cash equivalents, beginning of period 3,470,000 2,724,000
Cash and cash equivalents, end of period 3,692,000 3,470,000
Supplemental disclosures of cash flow information:    
Cash paid for interest 53,000 53,000
Cash paid for income taxes, net $ 9,000 $ 2,000