Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of components of income tax provision (benefit)

Components of the income tax expense (benefit) are as follows (in thousands):

	Year ended December 31,
	2016			2015			2014
Current:
Federal	$	442		$	3,944		$	19,150
State	(85		)	390			(13		)
Foreign	(526		)	1,841			242
Total current	(169		)	6,175			19,379
Deferred:
Federal	1,564			(2,628		)	(984		)
State	(112		)	(63		)	(1,147		)
Foreign	(46		)	(8		)	—
Total deferred	1,406			(2,699		)	(2,131		)
Income tax expense	$	1,237		$	3,476		$	17,248

Schedule of domestic and foreign net income (loss) before taxes

The components of income before income taxes are as follows (in thousands):

	Year ended December 31,
	2016			2015		2014
United States	$	4,502		$	4,760	$	56,729
Foreign	(1,358		)	5,874		141
Income before income taxes	$	3,144		$	10,634	$	56,870

Schedule of effective income tax rate reconciliation

A reconciliation of the U.S. federal statutory tax rate to the effective income tax rate is as follows:

	Year ended December 31,
	2016		2015		2014
Federal statutory tax rate	35.0	%	35.0	%	35.0	%
State income taxes, net of federal benefit	(5.3	)	2.0		(2.0	)
Non-U.S. income taxed at different rates	1.2		(4.4	)	—
Return to accrual adjustments	(2.3	)	(3.8	)	(0.2	)
Change in valuation allowance	0.3		0.1		—
Domestic production activities deduction	—		—		(3.0	)
Net operating loss carryback adjustment	10.0		1.4		—
Other	0.4		2.4		0.5
Effective income tax rate	39.3	%	32.7	%	30.3	%

Schedule of deferred tax assets and liabilities

The components of deferred tax assets and liabilities are as follows (in thousands):

	December 31,
	2016			2015
Deferred tax assets:
Net operating loss carryforwards	$	21,212		$	15,210
Allowance for doubtful accounts	1,582			432
Inventory valuation reserves	2,205			3,734
Equity compensation	3,161			4,250
Goodwill	10,788			6,869
Accrued compensation	80			73
Foreign tax credit carryforward	2,365			865
Other	76			67
Total gross deferred tax assets	41,469			31,500
Valuation allowance	(1,053		)	(1,093		)
Total deferred tax assets, net	40,416			30,407
Deferred tax liabilities:
Property and equipment	(7,264		)	(12,876		)
Intangible assets	(13,375		)	(18,249		)
Convertible debt	(2,010		)	(3,011		)
Unearned revenue	(4,535		)	—
Prepaid insurance and other	(338		)	(216		)
Total gross deferred tax liabilities	(27,522		)	(34,352		)
Net deferred tax assets (liabilities)	$	12,894		$	(3,945	)

Deferred taxes are presented in the balance sheets as follows (in thousands):

	December 31,
	2016			2015
Current deferred tax assets	$	52		$	2,649
Non-current deferred tax assets	16,215			17,229
Current deferred tax liabilities	(3,373		)	—
Non-current deferred tax liabilities	—			(23,823		)
Net deferred tax (liabilities) assets	$	12,894		$	(3,945	)