CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net loss	$ (2,463)	$ (2,375)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	355	421
Provision for (recovery of) inventory obsolescence	334	(138)
Gain on disposal of property and equipment, net	14
Stock-based compensation	360	242
Non cash other (income) loss - warrants	(128)	(1,534)
Changes in current assets and liabilities:
Trade receivables	(581)	(49)
Prepaid expenses	(20)	(159)
Inventories	(792)	(486)
Deposits and other assets	44	(128)
Accounts payable	560	190
Accrued and other liabilities	(63)	(105)
Net cash used in operating activities	(2,380)	(4,121)
Cash flows from investing activities
Purchases of property and equipment	(41)	(462)
Net cash used in investing activities	(41)	(462)
Cash flows from financing activities
Proceeds from stock options/warrants exercised		1,466
Change in restricted cash	60	60
Change in mortgage note payable	(120)	(120)
Proceeds from issuance of common shares, net		11,531
Net cash provided by (used in) financing activities	(60)	12,937
Net change in cash and cash equivalents	(2,481)	8,354
Cash and cash equivalents, beginning of period	11,805	5,733
Cash and cash equivalents, end of period	9,324	14,087
Cash paid for:
Interest	50	80
Income taxes