CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net loss	$ (3,650)	$ (4,862)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation and amortization	445	328
Stock compensation expense	488	922
Change in fair value of warrants	1,640	317
Inventory provision	17	0
Foreign currency translation loss (gain)	10	(16)
Gain on sales of fixed assets	0	(35)
Changes in operating assets and liabilities:
Inventory	(580)	(85)
Accounts receivable	1,250	(975)
Other current assets	(229)	191
Accounts payable	(1,976)	460
Accrued expenses	1,340	(394)
Other non-current assets and liabilities, net	(24)	36
Net cash used for operating activities	(1,269)	(4,113)
Investing activities:
Expenditures for property, plant and equipment	(13)	(353)
Other	93	35
Net cash provided by (used in) investing activities	80	(318)
Financing activities:
Net proceeds from issuance of common stock	258	0
Deferred Finance Costs, Current, Net	(97)
Payments on long-term debt	(9)	(9)
Net cash provided by (used in) financing activities	152	(9)
Net decrease in cash	(1,037)	(4,440)
Cash at beginning of period	14,581
Cash at end of period	13,544
Supplemental cash flow information (non-cash):
Additions to equipment in process included in accounts payable	$ 706	$ 458