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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Cash flows from operating activities:    
Net loss $ (7,098) $ (9,660)
Loss (income) from discontinued operations 318 (34)
Adjustment to reconcile net loss to cash used in operating activities:    
Depreciation and amortization 1,286 1,430
Write-down for excess and obsolete inventory 515 1,279
Provision for doubtful accounts 71 53
Stock-based compensation expense 671 532
Loss (gain) on change in fair value of liability-classified warrants 180 (90)
Warrant offering costs 123  
Amortization of debt discount and accretion of debt payment premium 71 128
Amortization of debt issuance costs   108
Loss on foreign currency transactions 16 119
Loss (income) from unconsolidated affiliate 561 (27)
Deferred income taxes (69) (171)
Loss on disposal of property and equipment 18 178
Changes in operating assets and liabilities:    
Accounts receivable (399) 6,409
Inventories 2,130 483
Prepaid expenses and other assets (141) (191)
Accounts payable (62) (428)
Income taxes 1,057 (252)
Accrued expenses and other current liabilities 403 (64)
Cash used in operating activities of continuing operations (349) (198)
Cash (used in) provided by operating activities of discontinued operations (82) 38
Net cash used in operating activities (431) (160)
Cash flows from investing activities:    
Investments in unconsolidated affiliate (449)  
Loan to unconsolidated affiliate (261)  
Repayments on loans to unconsolidated affiliate   129
Purchases of property and equipment (142) (236)
Proceeds from sale of property and equipment   18
Net cash used in investing activities (852) (89)
Cash flows from financing activities:    
Net (borrowings) proceeds under demand line of credit (3,217) 948
Proceeds from issuance of common stock and warrants, net of offering costs 1,839  
Proceeds from issuance of shareholder notes payable   3,000
Payments for debt issuance costs   (108)
Other (4) (105)
Net cash (used in) provided by financing activities (1,382) 3,735
Effect of exchange rates on cash (304) (79)
Net change in cash (2,969) 3,407
Cash at beginning of the year 6,878 3,471
Cash at end of the year 3,909 6,878
Supplemental disclosures:    
Cash paid for interest 1,193 1,140
Cash (received) paid for income taxes (372) 105
Noncash investing and financing activities:    
Accrued interest and debt settled in common stock and warrants 235   
Warrants issued to underwriters in public offering 16   
Loan to unconsolidated affiliate converted to investment 261   
Offering warrants classified as derivative liability $ 749