Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Components of Pretax Income (Loss) from Continuing Operations

The components of the pretax income (loss) from continuing operations are presented in the following table (in thousands):

	Year Ended December 31,
	2018			2017
U.S. Domestic	$	(30,169	)	$	(4,536	)
Foreign		—			(38	)
Pretax loss from operations	$	(30,169	)	$	(4,574	)

Components of (Benefit) Provision for Income Taxes from Continuing Operations

The components of the (benefit) provision for income taxes from continuing operations are presented in the following table (in thousands):

	Year Ended December 31,
	2018			2017
Current income tax (benefit) provision:
Federal	$	(64	)	$	(102	)
State		86			101
Foreign		4			3
Total current		26			2
Deferred income tax benefit:
Federal		(1,140	)		(36	)
State		(247	)		—
Total deferred		(1,387	)		(36	)
Total income tax benefit	$	(1,361	)	$	(34	)

Schedule of Effective Income Tax Rate Reconciliation

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax income (loss) from continuing operations as a result of the following differences:

	December 31,
	2018			2017
Federal statutory rate		21.00	%		35.00	%
Adjustments for tax effects of:
State taxes, net		0.47	%		7.40	%
Stock-based compensation		(4.29	)%		(16.10	)%
Foreign taxes		—			(1.20	)%
Tax law change		—			(459.10	)%
Fair market value adjustments		(0.59	)%		92.10	%
Other permanent adjustments		(0.56	)%		(1.30	)%
Tax rate adjustment		—			19.10	%
Uncertain tax positions		0.30	%		4.90	%
NOL expiration		—			(21.80	)%
Other		(1.57	)%		—
Valuation allowance		(10.25	)%		341.80	%
Effective income tax rate		4.51	%		0.80	%

Significant Components of Company's Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2018 and 2017 are as follows (in thousands):

	December 31,
	2018			2017
Deferred tax assets:
Accruals and reserves	$	1,133		$	1,783
Income tax credit carryforwards		3,150			3,182
Interest		1,351			(126	)
Inventory		4,959			4,302
Legal settlement		4,693			6,881
Net operating losses		45,092			34,376
Stock-based compensation		1,182			1,542
Total deferred tax assets		61,560			51,940
Valuation allowance		(46,578	)		(42,236	)
Total deferred tax assets, net of valuation allowance		14,982			9,704
Deferred tax liabilities:
Property and equipment		(21	)		1,249
Goodwill and intangibles		(1,972	)		3,945
Investment in foreign partnership		(13,370	)		(14,859	)
Total deferred tax liabilities		(15,363	)		(9,665	)
Net deferred tax assets (liabilities)	$	(381	)	$	39

Summary of Changes to Unrecognized Tax Benefits

The following table summarizes the changes to unrecognized tax benefits (in thousands):

	Year ended December 31,
	2018			2017
Unrecognized tax benefit at the beginning of the year		4,440			9,331
(Deduction) additions based on tax positions related to the    current year		—			(1,981	)
Additions based on tax positions related to the prior year		—			—
Reductions as a result of lapse of applicable statute    of limitations		(106	)		(551	)
Reductions as a result of tax rate changes		—			(236	)
Reductions as a result of foreign exchange rates and other		—			(2,123	)
Unrecognized tax benefits at the end of the year	$	4,334		$	4,440