Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss (including noncontrolling interests)	$ (2,064)	$ (2,815)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	39	170
Loss on disposal of property and equipment		42
Depreciation and amortization	400	128
Changes in operating assets and liabilities:
Accounts receivable	339	346
Projects in process	(182)	119
Inventory	(1,323)	(22)
Prepaid expenses and other current assets	(38)	(630)
Accounts payable and accrued expenses	344	(180)
Deferred revenues	(548)	767
Net cash used in operating activities	(3,033)	(2,075)
Cash flows from investing activities:
Purchase of property and equipment	(605)	(266)
Investment in joint venture		(3)
Net cash used in investing activities	(605)	(269)
Cash flows from financing activities:
Proceeds from note payable	1,713
Principal payments on capital lease obligations	(160)	(49)
Net cash provided by (used in) financing activities	1,553	(49)
Effect of exchange rate changes on cash	17	(56)
Net decrease in cash	(2,068)	(2,449)
Cash at beginning of period	3,476	3,082
Cash at end of period	1,408	633
Supplemental disclosure of cash flow information:
Cash paid for income taxes	10	179
Cash paid for interest	30	15
Supplemental disclosure of non-cash investing and financing activities
Purchase of equipment with capital lease obligations	$ 1,268	$ 90