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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities :      
Net income (loss) $ (4,339) $ 617 $ 109
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation and amortization of property and equipment 739 742 753
Amortization of intangible assets 88 115 172
Provision for (recovery of) inventory obsolescence 12 (93) 37
Loss (gain) on disposal of fixed assets 16 (41)   
Stock-based compensation 506 161 132
Non cash other income - warrants 842 (20) (227)
Non cash finance costs allocated to warrants 42      
Non cash other income - Lican       (61)
Non cash legal settlement       954
Provision (benefit) for deferred income taxes (1,613) 210 (76)
Change in assets and liabilities:      
Trade receivables 884 (658) (126)
Prepaid expenses and other current assets 406 (241) 257
Inventories (884) 287 (719)
Deposits (234) (227) (111)
Accounts payable 257 (284) 134
Litigation settlement liability 309 (564) 731
Accrued and other liabilities 365 94 (30)
Accrued payroll 54 30 (12)
Accrued vacation 14 37 (20)
Net cash provided by (used in) operating activities (2,536) 165 1,897
Cash flows from investing activities:      
Purchases of property and equipment (588) (753) (542)
Net cash used in investing activities (588) (753) (542)
Cash flows from financing activities:      
Proceeds from convertible preferred stock and warrants 7,000      
Repayments of capital lease payable       (111)
Proceeds from sales of common stock 48     
Proceeds from long-term debt       3,549
Repayments of long-term debt (162) (130) (3,740)
Net cash provided by (used in) financing activities 6,886 (130) (302)
Net change in cash and cash equivalents 3,762 (718) 1,053
Cash and cash equivalents at beginning of year 4,162 4,880 3,827
Cash and cash equivalents at end of year 7,924 4,162 4,880
Cash paid for:      
Interest paid, net 195 232 237
Income taxes