Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Components of Income (Loss) Before Income Taxes

The components of income (loss) before income taxes is summarized as follows:

	Year Ended December 31,
(in thousands)	2017		2016		2015
U.S.	$	39,559	$	23,736	$	(2,670	)
International	80		4,558		(9,108		)
Income (loss) before income taxes	$	39,639	$	28,294	$	(11,778	)

Schedule of Tax (Benefit) Provision

The income tax (benefit) provision is summarized as follows:

	Year Ended December 31,
(in thousands)	2017			2016			2015
Current
Federal	$	(58	)	$	(91	)	$	265
State	3,242			1,689			2,386
International	16			(49		)	218
	3,200			1,549			2,869
Deferred
Federal	(71,742		)	—			—
State	(15,220		)	—			—
International	16			(17		)	99
	(86,946		)	(17		)	99
Income tax (benefit) provision	$	(83,746	)	$	1,532		$	2,968

Differences in Provision for Income Taxes from Amount Computed by Applying Statutory U.S. Federal Income Tax Rate to Income (Loss) from Operations Before Income Taxes

A reconciliation of the income tax (benefit) provision with amounts determined by applying the U.S. federal income tax rate to income (loss) before income taxes is as follows:

	Year Ended December 31,
(in thousands)	2017			2016			2015
U.S. statutory rate	$	13,873		$	9,903		$	(4,122	)
Permanent items	(1,916		)	(570		)	(782		)
Write-off of foreign tax and research credits	—			7,125			—
Foreign tax credits	—			(319		)	306
Uncertain tax positions	3,128			1,529			2,523
Other tax credits	(175		)	90			(120		)
State and local taxes	1,252			433			478
Impact of rate change on deferred taxes	45,129			(383		)	749
True-up of prior year tax	7			(2,751		)	1,191
Foreign tax rate differential	97			(242		)	46
Valuation allowance	(141,094		)	(13,292		)	2,704
Benefit of windfall related to stock compensation	(2,723		)	—			—
Increase in indemnification deferred tax asset	(1,055		)	—			—
Other	(269		)	9			(5		)
Income tax (benefit) provision	$	(83,746	)	$	1,532		$	2,968

Components of Deferred Income Tax Assets (Liabilities)

The components of deferred income tax assets (liabilities) are as follows:

	December 31,
(in thousands)	2017			2016
Deferred Tax Assets
Federal benefit of state tax liabilities	$	7,510		$	11,420
Reserves, accruals and other	9,251			10,906
Inventory obsolescence	239			14,138
Capitalized research and development	9,941			18,861
Amortization of intangibles other than goodwill	3,903			8,040
Net operating loss carryforwards	63,202			80,808
Depreciation	972			492
Deferred tax assets	95,018			144,665
Deferred Tax Liabilities
Reserves, accruals and other	(1,346		)	(287		)
Customer relationships	(1,294		)	(3,398		)
Depreciation	—			—
Deferred tax liability	(2,640		)	(3,685		)
Less: valuation allowance	(5,368		)	(140,915		)
	$	87,010		$	65
Recorded in the accompanying consolidated balance sheets as:
Noncurrent deferred tax assets	$	87,010		$	65

Reconciliation of Uncertain Tax Positions

A reconciliation of the Company’s changes in uncertain tax positions for 2017, 2016 and 2015 is as follows:

(in thousands)	Amount
Balance of uncertain tax positions as of January 1, 2015	$	12,144
Additions related to current year tax positions	—
Reductions related to prior year tax positions	—
Settlements	(694		)
Lapse of statute of limitations	—
Balance of uncertain tax positions as of December 31, 2015	11,450
Additions related to current year tax positions	—
Reductions related to prior year tax positions	—
Settlements	(593		)
Lapse of statute of limitations	(416		)
Balance of uncertain tax positions as of December 31, 2016	10,441
Additions related to current year tax positions	—
Reductions related to prior year tax positions	(506		)
Settlements	—
Lapse of statute of limitations	(69		)
Balance of uncertain tax positions as of December 31, 2017	$	9,866

Reconciliation of Valuation Allowance

A summary of the changes in the Company’s valuation allowance is summarized below:

(in thousands)	Amount
Balance, January 1, 2015	$	152,138
Charged to income tax (benefit) provision	2,704
Foreign currency	(590		)
Deductions	—
Balance, December 31, 2015	154,252
Charged to income tax (benefit) provision	(13,292		)
Foreign currency	(45		)
Deductions	—
Balance, December 31, 2016	140,915
Charged to income tax (benefit) provision	2,305
Adoption of ASU 2016-09	2,929
Foreign currency	313
Deductions	—
Release valuation allowance	(141,094		)
Balance, December 31, 2017	$	5,368