Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (3,864)	$ (7,882)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	772	$ 1,415
Loss on disposal of property and equipment	28
Depreciation and amortization	93	$ 83
Changes in operating assets and liabilities:
Accounts receivable	424	236
Projects in process	(528)	(44)
Prepaid expenses and other current assets	(70)	(61)
Accounts payable and accrued expenses	711	429
Deferred revenues	(385)	(186)
Net cash used in operating activities	(2,819)	(6,010)
Cash flows from investing activities:
Purchase of property and equipment	(36)	(86)
Net cash used in investing activities	$ (36)	(86)
Cash flows from financing activities:
Proceeds from sales of common stock, net of offering costs		9,254
Proceeds from exercise of stock warrants		$ 36
Principal payments on capital lease obligation	$ (29)
Net cash (used in) provided by financing activities	(29)	$ 9,290
Effect of exchange rate changes on cash	(86)	39
Net increase (decrease) in cash	(2,970)	3,233
Cash at beginning of period	6,129	8,815
Cash at end of period	3,159	12,048
Supplemental disclosure of cash flow information:
Cash paid for income taxes	37	$ 1
Cash paid for interest	$ 8
Supplemental disclosure of non-cash investing and financing activities
Purchase of equipment with capital lease obligations		$ 530