Condensed 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	$ (22,114)	$ (31,450)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,002	5,412
Restricted stock issuance	807	1,061
Stock compensation expense	456	1,329
Amortization of debt issuance costs	526	827
Issuance of common stock to convert notes and interest	3	309
Accretion of discount on convertible note	1,291	7,171
Net (gain) loss on change in warrant liability	907	(4,992)
Discontinued Operations		1,093
Loss on R&D equipment related to discontinued operations		7,608
Change in operating assets and liabilities:
(Increase) decrease in accounts receivable	(433)	(932)
Increase in inventory	92	(1,114)
Increase in prepaid assets and other current assets	367	(86)
Increase (decrease) in accounts payable	1,371	817
Increase in accrued expenses and other liabilities	75	5,317
Decrease in long-term liabilities	(214)
Decrease in deferred revenue		(4,965)
Net cash used in operating activities - continuing operations	(12,864)	(12,595)
Net cash used in operating activities - discontinued operations		(1,093)
Net cash used in operating activities - total	(12,864)	(13,688)
Cash flows from investing activities
Purchase of property and equipment	(308)	(623)
Purchase of prepaid licenses		(14,000)
Net cash used in investing activities	(308)	(14,623)
Cash flows from financing activities
Decrease (increase) in cash restricted for convertible notes payable	4,098	(5,986)
Proceeds from issuance of common stock, net	8,389
Proceeds from exercise of stock options, net	4	75
Payments on note payable	(2,867)	(458)
Proceeds from convertible notes and warrants issued, less debt issuance costs	2,391	13,195
Net cash provided by financing activities	12,015	6,826
Net decrease in cash and cash equivalents	(1,157)	(21,485)
Cash and cash equivalents, beginning of period	7,618	23,663
Cash and cash equivalents, end of period	6,461	2,178
Supplemental disclosures of cash flow information:
Cash paid for interest	9	101
Cash paid for income taxes
Supplemental disclosures of non-cash financing information:
Issuance of common stock for legal settlements		2,275
Issuance of common stock to convert notes and interest	1,675	8,419
Acquisition of XTouch assets from Atmel		1,821
Beneficial conversion feature on convertible notes		5,970
Warrants issued in connection with convertible notes		$ 5,980