Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes

Schedule of income (loss) from continuing operations before income taxes

		Year ended December 31,
	2016				2015				2014
						(in thousands)
Domestic		$	(123,021	)		$	(53,553	)		$	(95,195	)
Foreign		3,577				30,907				16,841
Total		$	(119,444	)		$	(22,646	)		$	(78,354	)

Schedule of components of the expense (benefit) for income taxes

		Year ended December 31,
	2016				2015				2014
						(in thousands)
Current:
Federal		$	—			$	139			$	(2,464	)
Foreign		1,937				6,952				2,325
State and local		(111		)		(407		)		55
Total current expense (benefit) for income taxes		1,826				6,684				(84		)
Deferred:
Federal		1,459				2,104				(11,230		)
Foreign		(646		)		516				(291		)
State and local		127				28				191
Total deferred expense (benefit) for income taxes		940				2,648				(11,330		)
Total expense (benefit) for income taxes		$	2,766			$	9,332			$	(11,414	)

Schedule of reconciliation of the income tax expense computed using the Federal statutory rate to actual income tax provision

		Year ended December 31,
	2016				2015				2014
						(in thousands)
Income tax expense (benefit) at U.S. statutory rates		$	(41,806	)		$	(7,926	)		$	(27,424	)
State taxes, net of U.S. federal impact		(1,963		)		(1,607		)		(662		)
Effect of international operations		8,849				(7,659		)		(6,160		)
Research and development tax credit		(801		)		(1,628		)		(1,935		)
Net change in valuation allowance		50,520				23,655				27,156
Change in accrual for unrecognized tax benefits		(1,700		)		4,876				(1,940		)
ALD liquidation		(12,435		)		—				—
U.S. share-based compensation		2,133				—				—
Goodwill impairment		—				—				9,786
Change in contingent consideration		—				—				(10,279		)
Worthless stock deduction		—				(2,069		)		—
Change in entity tax status		—				904				—
Other		(31		)		786				44
Total expense (benefit) for income taxes		$	2,766			$	9,332			$	(11,414	)

Schedule of deferred tax assets and liabilities

		December 31,
	2016				2015
		(in thousands)
Deferred tax assets:
Inventory valuation		$	6,681			$	6,334
Net operating losses and credit carry forwards		54,527				33,181
Credit carry forwards		24,598				20,738
Warranty and installation accruals		1,757				3,022
Share-based compensation		12,624				12,461
Other		6,778				5,787
Total deferred tax assets		106,965				81,523
Valuation allowance		(106,793		)		(56,273		)
Net deferred tax assets		172				25,250
Deferred tax liabilities:
Purchased intangible assets		11,071				32,550
Undistributed earnings		186				618
Depreciation		69				1,908
Total deferred tax liabilities		11,326				35,076
Net deferred taxes		$	(11,154	)		$	(9,826	)

Schedule of reconciliation of beginning and ending amount of uncertain tax positions

	December 31,
	2016			2015			2014
	(in thousands)
Balance at beginning of year	$	9,152		$	4,276		$	6,228
Additions for tax positions related to current year	1,038			5,596			244
Additions for tax positions related to prior years	233			143			199
Reductions for tax positions related to prior years	(2,826		)	—			(2,345		)
Reductions due to the lapse of the statute of limitations	(39		)	(642		)	(38		)
Settlements	(106		)	(221		)	(12		)
Balance at end of year	$	7,452		$	9,152		$	4,276