CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net loss	$ (3,428)	$ (3,963)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	556	631
Provision for (recovery of) inventory obsolescence	365	(42)
Gain on disposal of property and equipment, net	19	18
Stock-based compensation	533	380
Non cash other (income) loss - warrants	555	(1,800)
Change in deferred tax asset	25
Changes in current assets and liabilities:
Trade receivables	(944)	(532)
Prepaid expenses	(48)	(23)
Inventories	(337)	(361)
Deposits and other assets	312	34
Accounts payable	436	788
Accrued and other liabilities	(337)	105
Net cash used in operating activities	(2,293)	(4,765)
Cash flows from investing activities
Purchases of property and equipment	(182)	(604)
Net cash used in investing activities	(182)	(604)
Cash flows from financing activities
Proceeds from stock options/warrants exercised	119	1,427
Change in restricted cash	60	60
Change in mortgage note payable	(180)	(180)
Proceeds from issuance of common shares, net		11,531
Net cash provided by (used in) financing activities	(1)	12,838
Net change in cash and cash equivalents	(2,476)	7,469
Cash and cash equivalents, beginning of period	11,805	5,733
Cash and cash equivalents, end of period	9,329	13,202
Cash paid for:
Interest	125	120
Income taxes