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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash flows from operating activities:      
Net income (loss) $ (1,243) $ 261 $ (597)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation 92 146 263
Loss on disposal of fixed assets   33 49
Provision for (recovery of) bad debts   (65) 34
Provision for obsolete inventory (63) 255 (194)
Stock-based compensation 218 86 109
(Increase) decrease in:      
Trade accounts receivable 6,353 (3,723) (1,643)
Other accounts receivable (26) 93 (68)
Inventory (694) (3,668) 1,156
Prepaids 753 657 (1,914)
Other assets (98) 148 50
Increase (decrease) in:      
Accounts payable 27 3,210 (353)
Accrued expenses (461) (376) (606)
Net cash provided by (used in) operating activities 4,858 (2,943) (3,714)
Cash flows from investing activities:      
Purchase of property and equipment (111) (116) (145)
Decrease in restricted cash     1,003
Net cash provided by (used in) investing activities (111) (116) 858
Cash flows from financing activities:      
Borrowings on line of credit 4,460 4,380  
Repayments on line of credit (7,185) (1,655)  
Cash received from exercise of stock options 27 137  
Net cash provided by (used in) financing activities (2,698) 2,862  
Effect of exchange rate changes on cash (866) (708) (5)
Net increase (decrease) in cash and cash equivalents 1,183 (905) (2,861)
Cash and cash equivalents, beginning of year 1,464 2,369 5,230
Cash and cash equivalents, end of year 2,647 1,464 $ 2,369
Cash paid for interest $ 350 77  
Cash paid for income taxes   $ 50