Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Taxes

Schedule of loss before income taxes

	Years ended December 31,
	2015		2014			2013
	(in thousands)
United States	$	12,708	$	(11,987	)	$	(18,998	)
Foreign		2,497		1,820			2,894
Loss before income taxes	$	15,205	$	(10,167	)	$	(16,104	)

Schedule of provision for income taxes

	Years ended December 31,
	2015			2014		2013
	(in thousands)
Current:
United States
Federal	$	—		$	—	$	—
State		(33	)		59		84
Foreign		374			780		641
Total current		341			839		725
Deferred:
Foreign		186			260		315
Total deferred		186			260		315
Income tax provision	$	527		$	1,099	$	1,040

Schedule of reconciliations of income taxes at the United States Federal statutory rate to the effective income tax rate

	Years ended December 31,
	2015			2014			2013
	(in thousands)
Income tax benefit at the United States statutory rate	$	5,322		$	(3,558	)	$	(5,636	)
State income taxes		(22	)		38			55
Unrecognized tax benefits		(174	)		184			(293	)
Effect of change in valuation allowance		(5,676	)		(6,835	)		5,975
Foreign income tax rate differentials		600			259			(1,244	)
Unremitted earnings of foreign subsidiaries		(102	)		(758	)		961
Stock options		379			686			450
Deemed distribution from foreign subsidiaries		—			607			316
Discrete items, net		(540	)		9,143			—
Other, net		740			1,333			456
Income tax provision	$	527		$	1,099		$	1,040

Schedule of significant components of current and long-term deferred income taxes

	As of December 31,
	2015						2014
	Current			Long Term			Current			Long Term
	(in thousands)
Federal net operating loss carryforwards	$	—		$	101,479		$	—		$	105,119
State net operating loss carryforwards		—			1,636			—			2,210
Foreign net operating loss carryforwards		—			810			—			1,280
Federal tax credit carryforwards		—			16,343			—			16,669
State tax credit carryforwards		—			3,964			—			5,293
Unremitted earnings of foreign subsidiaries		—			(8,632	)		—			(8,800	)
Intangible assets		—			286			—			383
Property, plant and equipment		—			9,331			—			4,548
Accrued compensation		1,082			—			65			—
Inventories		2,541			—			9,808			—
Stock compensation		—			6,001			—			5,198
Warranty		1,214			—			486			—
Other		1,237			(3,945	)		1,620			(2,328	)
Deferred taxes, gross		6,074			127,273			11,979			129,572
Valuation allowance		(6,335	)		(125,928	)		(10,975	)		(128,982	)
Deferred taxes, net	$	(261	)	$	1,345		$	1,004		$	590

Schedule of reconciliation of the beginning and ending balance of unrecognized tax benefits

	2015			2014
	(in thousands)
Balance at beginning of year	$	7,960		$	7,645
(Decrease) increase in unrecognized tax benefits as a result of tax positions taken during a prior period		(78	)		92
Decreases in unrecognized tax benefits related to settlements with tax authorities		(211	)		—
Increases in unrecognized tax benefits as a result of tax positions taken during the current period		—			223
Balance at end of year	$	7,671		$	7,960
Recorded as other long-term liability	$	2,142		$	2,328
Recorded as a decrease in deferred tax assets and offsetting valuation allowance		5,529			5,632
	$	7,671		$	7,960