Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes Tables

Schedule of Tax Effects of Temporary Differences that Give Rise to Significant Portions of Deferred Tax Assets and Liabilities

Deferred tax assets are summarized as follows (in thousands):

		December 31,
		2016		2015
Deferred tax assets, current
Reserves	$	2,351	$	2,581
Other		910		749
Total gross deferred tax assets, current		3,261		3,330
Deferred tax assets, non-current
Net operating loss carryforwards		126,335		122,281
R&D credit carryforwards		6,998		6,747
Depreciation/amortization deferred		20,024		20,848
Deferred revenue		2,091		-
Other		8,135		7,954
Total gross deferred tax assets, non-current		163,583		157,830
Net deferred taxes before valuation allowance		166,844		161,160
Less: Valuation allowance		(166,844)		(161,160)
Deferred tax assets	$	-	$	-