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Consolidted Statement of Cash Flows (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Cash flows provided by (used for) operating activities:    
Net loss $ (771,000) $ (633,000)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:    
Depreciation and amortization 212,000 186,000
Provision for inventory reserves 900,000 600,000
Provision for sales returns and doubtful accounts 19,000 20,000
Stock based compensation 19,000 11,000
Changes in assets and liabilities:    
Restricted cash 100,000 0
Trade accounts receivable (371,000) 306,000
Inventory 915,000 (987,000)
Prepaid expenses and other current assets (11,000) 36,000
Trade accounts payable (125,000) (78,000)
Accrued liabilities 96,000 (19,000)
Other assets and liabilities (73,000) 25,000
Total adjustments 1,681,000 100,000
Net cash provided by (used for) operating activities 910,000 (533,000)
Cash flows provided by (used for) investing activities:    
Acquisition of property & equipment (20,000) (31,000)
Payments for investments in joint ventures 0 (637,000)
Payments for investments in securities (350,000) 0
Net cash used for investing activities (370,000) (668,000)
Impact of exchange rates on cash 30,000 11,000
Net increase (decrease) in cash and cash equivalents 570,000 (1,190,000)
Cash and cash equivalents, beginning of period 1,905,000 3,095,000
Cash and cash equivalents, end of period 2,475,000 1,905,000
Supplemental disclosures of cash flow information:    
Cash paid for interest 53,000 53,000
Cash paid for income taxes, net $ 3,000 $ 3,000