Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

The provision for income taxes attributable to continuing operations is based upon loss from continuing operations before provision for income taxes as follows (in thousands):



	Year ended December 31,
	2015			2014			2013
Domestic	$	(11,932	)	$	(15,592	)	$	(14,358	)
Foreign	(1,251		)	192			(70		)
	$	(13,183	)	$	(15,400	)	$	(14,428	)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes consists of the following (in thousands):



	Year ended December 31,
	2015		2014		2013
Federal:
Current	$	—	$	—	$	—
Deferred	—		—		—
Total federal provision	—		—		—
State:
Current	20		16		17
Deferred	—		—		—
Total state provision	20		16		17
Foreign:
Current	30		195		294
Deferred	—		—		—
Total foreign provision	30		195		294
Total income tax expense	$	50	$	211	$	311

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision for income taxes differs from the amount estimated by applying the statutory Federal income tax rate to loss before taxes as follows (in thousands):



	Year ended December 31,
	2015			2014			2013
Federal tax at statutory rate of 35%	$	(4,615	)	$	(5,390	)	$	(5,050	)
State taxes, net of federal benefit	(634		)	(577		)	17
U.S.-Foreign rate differential	480			100			342
Change in Valuation Allowance	3,072			4,115			5,862
Research and Development credits	175			357			(1,241		)
Permanent items	1,566			1,560			406
Others	6			46			(25		)
Total income tax expense	$	50		$	211		$	311

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

As of December 31, 2015 and 2014, a valuation allowance has been recorded against 100% of the net deferred tax asset. A valuation allowance is recognized if, based on the weight of the available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realizable in a particular tax jurisdiction. All available evidence, both positive and negative, is considered to determine whether, based on the weight of that evidence, a valuation allowance is needed for some portion or all of a deferred tax asset. The Company determined that it is more likely than not that it will not realize a benefit from its United States deferred tax assets based on historical cumulative losses incurred in the United States. Therefore, a valuation allowance has been maintained on all deferred tax assets. The components of the net deferred income tax asset are as follows (in thousands):



		Year ended December 31,
		2015			2014
Deferred tax assets:
	Net operating loss carry forwards	$	83,522		$	72,058
	Tax credit carry forwards	18,940			26,571
	Fixed and intangible assets	868			6,424
	Capitalized research and development costs	58			58
	Stock based compensation and other reserves and allowances	3,828			15,535
	Gross deferred income tax assets	107,216			120,646
	Valuation allowance	(107,216		)	(120,646		)
	Net deferred income tax assets	$	—		$	—

Summary of Income Tax Contingencies [Table Text Block]

The following is a rollforward of the Company's unrecognized tax benefits related to uncertain tax positions for the years ended December 31, 2015 and 2014 (in thousands):



	Year ended December 31,
	2015			2014
Balance as of the beginning of the year	$	1,359		$	2,138
Tax positions related to current year:
Additions	147			76
Reductions	(18		)	(48		)
Tax positions related to prior years:
Additions	7,991			—
Reductions	(28		)	(232		)
Settlements	—			—
Lapses in statute of limitations	(385		)	(575		)
Balance as of the end of the year	$	9,066		$	1,359

Included in the balance of total unrecognized tax benefits at December 31, 2015 are potential benefits of $409,000, which if recognized, would affect the effective rate on income from continuing operations.

On December 31, 2015, the Company had accrued interest and penalties related to the uncertain tax benefits of approximately $74,000. During 2015, the Company decreased the prior year balance by $25,000 due to lapses in statutes of limitations.