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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Cash flows from operating activities    
Net income (loss) $ (1,870) $ 331
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depreciation and amortization 620 640
Provision for (recovery of) inventory obsolescence 40 (19)
Gain on disposal of property and equipment, net (3) (41)
Stock-based compensation 348 109
Change in fair value of liabilities (17) 108
Provision (benefit) for deferred taxes (1,075) 298
Changes in current assets and liabilities:    
Trade receivables 778 (422)
Prepaid expenses 277 (324)
Inventories (1,022) 414
Deposits and other assets (363) (289)
Accounts payable 368 (468)
Accrued and other liabilities 730 (183)
Net cash provided by (used in) operating activities (1,189) 154
Cash flows from investing activities    
Purchases of property and equipment (417) (449)
Net cash used in investing activities (417) (449)
Cash flows from financing activities    
Proceeds from stock options exercised 48   
Repayments of mortgage note payable (103) (97)
Net cash used in financing activities (55) (97)
Net change in cash and cash equivalents (1,661) (392)
Cash and cash equivalents, beginning of period 4,162 4,880
Cash and cash equivalents, end of period 2,501 4,488
Interest 171 175
Income taxes