Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities
Net income (loss)	$ (924)	$ (9,777)
Loss from discontinued operations	109	2,238
Net income (loss) from continuing operations	(815)	(7,539)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation	502	1,075
Amortization	158	161
(Gain) loss on disposal of equipment	(11)	158
Provision for doubtful accounts, net of recoveries	(62)	0
Excess and obsolete inventory reserve	0	228
Intangible assets abandonment and building impairment	317	2,965
Stock-based compensation, net of forfeitures	135	1,207
Changes in operating assets and liabilities:
Accounts receivable	(7,192)	(1,691)
Inventories	280	78
Prepaid expenses, other current assets and other non-current assets	1,840	294
Accounts payable	3,896	2,726
Accrued liabilities and other non-current liabilities	(1,378)	(3,474)
Net cash used in operating activities - continuing operations	(2,330)	(3,812)
Net cash used in operating activities - discontinued operations	(334)	(1,723)
Net cash used in operating activities	(2,664)	(5,535)
Investing Activities
Purchases of equipment and patents	(392)	(511)
Proceeds from the sale of equipment	1	1
Net cash used in investing activities	(391)	(510)
Financing Activities
Taxes paid on behalf of equity award participants	(12)	(258)
Net cash used in financing activities	(12)	(258)
Effect of exchange rate fluctuations on cash	(601)	607
Net decrease in cash, cash equivalents and restricted cash	(3,668)	(5,696)
Cash, cash equivalents, and restricted cash at beginning of period (Note 2)	14,386	17,846
Cash, cash equivalents and restricted cash at end of period (Note 2)	$ 10,718	$ 12,150