Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Domestic and foreign pre-tax income (loss) is as follows (in thousands):

	For the Years Ended December 31,
	2017			2016			2015
Domestic	$	(53,958	)	$	(12,040	)	$	(15,822	)
Foreign	5,081			4,223			2,886
Total pre-tax loss	$	(48,877	)	$	(7,817	)	$	(12,936	)

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

	For the Years Ended December 31,
	2017			2016			2015
Current provision:
Federal	$	—		$	—		$	—
State	73			78			30
Foreign	3,692			2,225			1,772
Total current provision	3,765			2,303			1,802
Deferred provision (benefit):
Federal	(309		)	(86		)	35
State	(10		)	(4		)	2
Foreign	281			221			(97		)
Total deferred provision	(38		)	131			(60		)
Total income tax provision	$	3,727		$	2,434		$	1,742

Schedule of Effective Income Tax Rate Reconciliation

The income tax provision (benefit) differs from the amount computed by applying the statutory federal income tax rate to pretax income as a result of the following differences (dollar amounts in thousands):

	For the Years Ended December 31,
	2017					2016					2015
	$			%		$			%		$			%
Statutory federal tax (benefit) rate	$	(17,107	)	35.0	%	$	(2,736	)	35.0	%	$	(4,526	)	35.0	%
Increase (decrease) in rates resulting from:
State taxes	(749		)	1.5		(67		)	0.9		609			(4.7	)
Foreign dividends and unremitted earnings	(638		)	1.3		1,745			(22.3	)	1,493			(11.5	)
Impact from U.S. tax reform	36,311			(74.3	)	—			—		—			—
Tax audit settlement	1,497			(3.1	)	—			—		—			—
Valuation allowance	(16,363		)	33.5		1,596			(20.4	)	2,456			(19.0	)
Taxes on foreign income that differ from U.S. tax rate	(1,361		)	2.8		(901		)	11.5		(405		)	3.1
Executive Compensation limitation	17			—		1,005			(12.9	)	—			—
Non-deductible stock-based compensation expense	567			(1.2	)	135			(1.7	)	1,104			(8.5	)
Expiration of attributes	1,397			(2.9	)	1,478			(18.9	)	893			(6.9	)
Uncertain tax positions	302			(0.6	)	120			(1.5	)	435			(3.4	)
Other	(146		)	0.4		59			(0.8	)	(317		)	2.4
Effective tax rate	$	3,727		(7.6	)%	$	2,434		(31.1	)%	$	1,742		(13.5	)%

Schedule of Deferred Tax Assets and Liabilities

The components of deferred taxes consist of the following (in thousands):

	December 31, 2017			December 31, 2016
Deferred tax assets:
Accrued warranty	$	256		$	657
Inventory	6,114			3,631
Net operating loss carryforwards	39,534			57,294
Tax credit carryforwards	20,857			22,075
Stock-based compensation	978			1,995
Fixed assets	2,358			1,808
Goodwill and other identified intangibles	1,073			1,603
Deferred revenue	1,201			2,906
Subsidiary service accruals	4,870			1,702
Other	1,308			2,082
Total deferred tax assets	78,549			95,753
Less: valuation allowance	(77,437		)	(88,566		)
Net deferred tax assets	1,112			7,187
Deferred tax liabilities:
Intangible assets	—			(5,603		)
Other	(325		)	(467		)
Total deferred tax liabilities	(325		)	(6,070		)
Total net deferred tax assets	$	787		$	1,117

Schedule of Unrecognized Tax Benefits Roll Forward

The Company’s total amounts of unrecognized tax benefits at the beginning and end of the period are as follows (in thousands):

	Total
Balance as of December 31, 2015	$	3,680
Additions based on tax positions related to the current year	245
Additions for tax positions of prior years	24
Reductions for tax positions of prior years	(240		)
Reductions as a result of a lapse of applicable statute of limitations	(80		)
Reductions due to settlements	(6		)
Other	$	(74	)
Balance as of December 31, 2016	$	3,549
Additions based on tax positions related to the current year	1,124
Additions for tax positions of prior years	146
Reductions for tax positions of prior years	(278		)
Reductions as a result of a lapse of applicable statute of limitations	(56		)
Other	97
Balance as of December 31, 2017	$	4,582