Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Taxes.

Schedule of the Components of Loss Before Income Taxes

        The components of loss before income taxes and the provision for income taxes for the years ended December 31, 2015, 2014 and 2013, by jurisdiction, are as follows (in thousands):

	2015									2014									2013
	U.S.			Foreign			Total			U.S.			Foreign			Total			U.S.			Foreign			Total
Loss before income taxes	$	(54,921	)	$	(769	)	$	(55,690	)	$	(87,459	)	$	(1,354	)	$	(88,813	)	$	(61,730	)	$	(1,350	)	$	(63,080	)
Income tax benefit		—			—			—			—			325			325			—			410			410
Net loss attributable to the Company	$	(54,921	)	$	(769	)	$	(55,690	)	$	(87,459	)	$	(1,029	)	$	(88,488	)	$	(61,730	)	$	(940	)	$	(62,670	)

Schedule of Components of Income Tax Expense (Benefit)

        The significant components deferred income tax (benefit) expense for the years ended December 31, 2015, 2014 and 2013, by jurisdiction, are as follows (in thousands):

	2015									2014									2013
	U.S.			Foreign			Total			U.S.			Foreign			Total			U.S.			Foreign			Total
Deferred tax (benefit) expense	$	(14,237	)	$	893		$	(13,344	)	$	(4,282	)	$	194		$	(4,088	)	$	(3,209	)	$	1,406		$	(1,803	)
Net operating loss carryforward (generated) expired		(8,345	)		895			(7,450	)		(8,974	)		625			(8,349	)		(6,536	)		(15	)		(6,551	)
Valuation allowance increase (decrease)		22,582			(1,788	)		20,794			13,256			(819	)		12,437			9,745			(1,391	)		8,354
Provision for income taxes	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation

	2015			2014			2013
U.S. Federal statutory tax rate		(35.0	)%		(35.0	)%		(35.0	)%
Deferred state taxes, net of federal benefit		(3.1	)%		(1.2	)%		(1.3	)%
Common stock warrant liability		(2.3	)%		20.6	%		20.6	%
Other, net		0.3	%		(0.2	)%		0.6	%
Change in valuation allowance		40.1	%		15.4	%		14.5	%
		0.0	%		(0.4	)%		(0.6	)%

Schedule of Deferred Tax Assets and Liabilities

        Significant components of the Company's deferred tax assets and liabilities as of December 31, 2015 and 2014 are as follows (in thousands):

	U.S.						Foreign
	2015			2014			2015			2014
Intangible assets	$	—		$	—		$	1,469		$	1,269
Deferred revenue		7,017			4,492			—			—
Other reserves and accruals		6,411			1,492			—			—
Tax credit carryforwards		798			—			65			78
Property, plant and equipment		1,803			1,624			389			464
Amortization of stock-based compensation		13,145			10,623			—			—
Capitalized research & development expenditures		13,431			12,816			4,008			4,777
Net operating loss carryforwards		27,202			18,857			5,797			2,931
Total deferred tax asset		69,807			49,904			11,728			9,519
Valuation allowance		(62,584	)		(40,002	)		(11,520	)		(9,519	)
Net deferred tax assets	$	7,223		$	9,902		$	208		$	—
Intangible assets		(220	)		(335	)		—			—
Property, plant and equipment		—			—			(208	)		—
Non-employee stock based compensation		(1,556	)		(1,556	)		—			—
Section 382 recognized built in loss		(5,447	)		(8,011	)		—			—
Net deferred tax liability	$	(7,223	)	$	(9,902	)	$	(208	)	$	—
Net	$	—		$	—		$	—		$	—

Schedule of Valuation Allowance

        A reconciliation of the current year change in valuation allowance is as follows (in thousands):

	U.S.		Foreign			Total
Increase (decrease) in valuation allowance for current year increase in net operating losses	$	8,345	$	(895	)	$	7,450
Increase in valuation allowance for current year net increase in deferred tax assets other than net operating losses		14,237		641			14,878
Decrease in valuation allowance as a result of foreign currency fluctuation		—		(1,534	)		(1,534	)
Increase in valuation allowance due to acquisition of Hypulsion		—		3,789			3,789
Net increase in valuation allowance	$	22,582	$	2,001		$	24,583

Schedule of Unrecognized Tax Benefits

        A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	2015			2014			2013
Unrecognized tax benefits balance at beginning of year	$	522		$	1,033		$	1,579
Reductions for tax positions of prior years		—			(465	)		(471	)
Currency Translation		(85	)		(46	)		(75	)
Unrecognized tax benefits balance at end of year	$	437		$	522		$	1,033