Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes.

Schedule of the Components of Loss Before Income Taxes

	2014			2013			2012
United States	$	(87,458,000	)	$	(61,730,000	)	$	(30,399,000	)
Foreign		(1,354,000	)		(1,350,000	)		(1,463,000	)
	$	(88,812,000	)	$	(63,080,000	)	$	(31,862,000	)

Schedule of Components of Income Tax Expense (Benefit)

	2014			2013			2012
United States	$	—		$	—		$	—
Foreign		(325,000	)		(410,000	)		—
	$	(325,000	)	$	(410,000	)	$	—

Schedule of Significant Components of U.S. Deferred Income Taxes

	2014			2013			2012
Deferred tax (benefit) expense	$	(4,282,000	)	$	(3,209,000	)	$	10,661,000
Net operating loss carryforward (generated) expired		(8,974,000	)		(6,536,000	)		26,924,000
Valuation allowance increase (decrease)		13,256,000			9,745,000			(37,585,000	)
Provision for income taxes	$	—		$	—		$	—

Schedule of Significant Components of Foreign Deferred Income Taxes

	2014			2013			2012
Deferred tax expense (benefit)	$	194,000		$	1,406,000		$	(1,041,000	)
Net operating loss carryforward expired (generated)		625,000			(15,000	)		(79,000	)
Valuation allowance (decrease) increase		(819,000	)		(1,391,000	)		1,120,000
Provision for income taxes	$	—		$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation

	2014			2013			2012
U.S. Federal statutory tax rate		(35.0	)%		(35.0	)%		(35.0	)%
Deferred state taxes, net of federal benefit		(1.2	)%		(1.3	)%		(3.3	)%
Common stock warrant liability		20.6	%		20.6	%		(5.3	)%
Gain on Hypulsion transaction		0.0	%		(1.8	)%		0.0	%
Bargain purchase gain—ReliOn		(0.4	)%		0.0	%		0.0	%
Other, net		0.1	%		0.1	%		0.1	%
Change to uncertain tax positions		(0.9	)%		(1.3	)%		(1.6	)%
Foreign tax rate differential		0.2	%		0.2	%		0.5	%
Expiring attribute carryforward		0.8	%		2.2	%		0.0	%
Adjustments to open deferred tax balance		0.0	%		(0.3	)%		(5.8	)%
Writeoff of tax attributes due to imposition of Section 382 limitation		0.0	%		1.5	%		165.7	%
Change in valuation allowance		15.4	%		14.5	%		(115.3	)%
		(0.4	)%		(0.6	)%		0.0	%

Schedule of Deferred Tax Assets and Liabilities

	U.S. Years ended December 31,						Foreign Years ended December 31,
	2014			2013			2014			2013
Intangible assets	$	—		$	59,000		$	1,269,000		$	999,000
Deferred revenue		4,492,000			3,425,000			—			—
Other reserves and accruals		1,492,000			1,253,000			—			—
Tax credit carryforwards		—			—			78,000			84,000
Property, plant and equipment		1,624,000			1,450,000			464,000			504,000
Amortization of stock-based compensation		10,623,000			9,183,000			—			—
Capitalized research & development expenditures		12,816,000			13,775,000			4,777,000			5,195,000
Net operating loss carryforwards		18,857,000			9,883,000			2,931,000			3,556,000
Total deferred tax asset		49,904,000			39,028,000			9,519,000			10,338,000
Valuation allowance		(40,002,000	)		(26,746,000	)		(9,519,000	)		(10,338,000	)
Net deferred tax assets	$	9,902,000		$	12,282,000		$	—		$	—
Intangible assets	$	(335,000	)	$	—		$	—		$	—
Non-employee stock based compensation		(1,556,000	)		(1,556,000	)		—			—
Section 382 recognized built in loss		(8,011,000	)		(10,726,000	)					—
Net deferred tax liability	$	(9,902,000	)	$	(12,282,000	)	$	—		$	—
Net	$	—		$	—		$	—		$	—

Schedule of Valuation Allowance

	Total			U.S.		Foreign
Increase in valuation allowance for current year increase in net operating losses:	$	8,140,000		$	8,974,000	$	(834,000	)
Increase in valuation allowance for current year net increase in deferred tax assets other than net operating losses:		4,647,000			4,282,000		365,000
Decrease in valuation allowance as a result of foreign currency fluctuation		(829,000	)		—		(829,000	)
Increase in valuation allowance due to current year change of deferred tax assets as the result of uncertain tax positions.		479,000			—		479,000
Net increase (decrease) in valuation allowance	$	12,437,000		$	13,256,000	$	(819,000	)

Schedule of Unrecognized Tax Benefits

	2014			2013			2012
Unrecognized tax benefits balance at beginning of year	$	1,033,000		$	1,579,000		$	2,046,000
Reductions for tax positions of prior years		(465,000	)		(471,000	)		(503,000	)
Currency Translation		(46,000	)		(75,000	)		36,000
Unrecognized tax benefits balance at end of year	$	522,000		$	1,033,000		$	1,579,000