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Consolidated Statements of Cash Flows (Unaudited) (USD $)
 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Cash flows from operating activities:    
Net loss $ (1,349,000) $ (2,129,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation 208,000 138,000
Loss on disposal of fixed assets 66,000 12,000
Provision for (recovery of ) bad debts 225,000 (100,000)
Provision for obsolete inventory 51,000 124,000
Stock-based compensation expense 174,000 135,000
(Increase) decrease in:    
Trade accounts receivable 1,654,000 7,187,000
Other accounts receivable (23,000) 520,000
Inventory (2,360,000) (1,561,000)
Prepaids 1,038,000 (1,196,000)
Other assets (238,000) 10,000
Increase (decrease) in:    
Accounts payable (308,000) (2,796,000)
Accrued expenses (1,053,000) 68,000
Cash provided by (used in) continuing operations (1,915,000) 412,000
Cash provided by discontinued operations   710,000
Net cash provided by (used in) operating activities (1,915,000) 1,122,000
Cash flows from investing activities:    
Purchase of property and equipment (266,000) (167,000)
Sale of property and equipment   6,000
Increase in restricted cash (2,000)  
Net cash used in investing activities (268,000) (161,000)
Effect of exchange rate changes on cash 102,000 7,000
Net increase (decrease) in cash and cash equivalents (2,081,000) 968,000
Cash and cash equivalents, beginning of period 11,422,000 12,484,000
Cash and cash equivalents, end of period 9,341,000 13,452,000
Cash paid for interest      
Cash paid for income taxes