Income Tax Expense (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Net Loss Before Income Tax Benefit

Net loss before income tax benefit attributable to United States and international operations, consists of the following:

	Year Ended December 31,
	2017			2016			2015
United States	$	(56,178	)	$	(135,925	)	$	(44,114	)
Foreign	(10,681		)	(18,254		)	(15,647		)
Net loss before income tax	$	(66,859	)	$	(154,179	)	$	(59,761	)

Schedule of Income Tax (Benefit) Expense

Income tax (benefit) expense consists of the following:

	Year Ended December 31,
	2017			2016			2015
Current:
Federal	$	(102	)	$	(50	)	$	50
State	102			90			100
Foreign	237			458			148
Total current	$	237		$	498		$	298
Deferred:
Federal	$	(699	)	$	—		$	(8,621	)
State	—			—			(1,008		)
Foreign	3			—			(6		)
Total deferred	$	(696	)	$	—		$	(9,635	)
Total:
Federal	$	(801	)	$	(50	)	$	(8,571	)
State	102			90			(908		)
Foreign	240			458			142
Income tax expense (benefit)	$	(459	)	$	498		$	(9,337	)

Schedule of Income Tax Benefit Computation

Income tax benefit was computed by applying the United States federal statutory rate of 34% to net loss before taxes as follows:

	Year Ended December 31,
	2017			2016			2015
Income tax benefit at federal statutory rate	$	(22,732	)	$	(52,418	)	$	(20,315	)
State income tax benefit, net of federal benefit	(1,114		)	(2,323		)	(937		)
Meals and entertainment	454			445			328
Research and development credits	(913		)	(2,041		)	(1,756		)
Stock-based compensation	3,203			2,604			1,633
Derivative loss	—			14,903			—
Contingent consideration	(986		)	(850		)	34
Foreign tax rate differential	692			1,394			1,013
Net change in valuation allowance	(24,976		)	35,678			10,052
Return to provision true-up	5,719			1,981			583
Unrecognized tax benefits	457			971			928
Federal tax rate change	39,807			—			—
Other, net	(70		)	154			(900		)
Income tax benefit	$	(459	)	$	498		$	(9,337	)

Schedule of Components of Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and (liabilities) are as follows:

	Year Ended December 31,
	2017			2016
Deferred tax assets:
Net operating loss carryforwards	$	101,423		$	124,881
Accrued expenses	5,617			6,582
Tax credits	11,826			11,314
Bad debt	78			91
Inventory	2,160			4,424
Capitalized research and development	16,079			21,374
Deferred compensation	2,535			3,596
Other	1,099			964
Deferred tax asset	140,817			173,226
Valuation allowance	(118,551		)	(133,784		)
Total deferred tax assets	22,266			39,442
Deferred tax liabilities:
Developed technology and trademark	(9,033		)	(14,218		)
Trademarks and tradenames	(733		)	(1,027		)
Depreciation and amortization	(8,961		)	(15,316		)
Convertible debt	(3,740		)	(9,760		)
Other	—			—
Total deferred tax liabilities	(22,467		)	(40,321		)
Net deferred tax liability	$	(201	)	$	(879	)

Schedule of Reconciliation of Unrecognized Tax Benefits

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (in thousands):

	Year Ended December 31, 2017			Year Ended December 31, 2016
Balance at January 1, 2017	$	11,754		$	8,928
Additions for tax positions related to prior periods	—			1,654
Decreases related to prior year tax positions	(160		)	(95		)
Lapse of statute of limitations	—			—
Additions for tax positions related to current period	613			1,267
Balance at December 31, 2017	$	12,207		$	11,754