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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Taxes

Schedule of components of loss before income taxes

		Year Ended December 31,
		2017			2016			2015
Domestic		$	(31,714)		$	(41,162)		$	(36,230)
Foreign			(4,866)			(5,079)			(3,804)
Loss before income taxes		$	(36,580)		$	(46,241)		$	(40,034)

Schedule of components of income tax benefit

		Year Ended December 31,
		2017			2016			2015
Current federal benefit		$	40		$	215		$	280
Current state benefit (expense)			3,545			181			(571)
Current foreign benefit			2,492			—			—
Deferred federal (expense) benefit			(51)			5,795			12,499
Deferred state benefit (expense)			697			(847)			860
Deferred foreign (expense) benefit			(1,409)			1,105			687
Income tax benefit		$	5,314		$	6,449		$	13,755

Schedule of the difference between the income tax provision and the amount computed by applying the statutory federal income tax rate to losses before income taxes

		Year Ended December 31,
		2017			2016			2015
Tax benefit computed at statutory rate of 35%		$	12,803		$	16,184		$	14,012
Change in valuation allowance			(4,564)			(10,200)			(502)
State income tax benefit (expense), net of federal tax			2,757			(433)			423
Foreign losses			1,593			985			954
Transaction costs			—			—			(445)
Tax reform impact to deferred tax balances (1)			(7,590)			—			—
Other			315			(87)			(687)
Income tax benefit		$	5,314		$	6,449		$	13,755

(1) Due to the Tax Cuts and Jobs Act enacted on December 22, 2017, the Company’s domestic deferred tax assets and liabilities were remeasured from 35% to 21% as of December 31, 2017. The change in tax rate resulted in a decrease to the gross domestic deferred tax asset which is offset by a corresponding decrease to the valuation allowance.

Schedule of the principal components of the Company's net deferred tax (liabilities) assets

		December 31,
		2017			2016
Deferred tax assets:
Federal tax net operating loss ("NOL") carryforward		$	21,014		$	32,746
Foreign tax NOL carryforward			4,410			4,486
Deferred revenue			626			462
Restricted stock and restricted stock unit awards			192			318
Workers’ compensation			64			74
State tax NOL carryforward			1,529			1,223
Self-insurance			128			219
Canadian start-up costs			156			275
Alternative Minimum Tax ("AMT") credit carryforward			315			315
Foreign tax credit			—			1,874
Foreign deferred taxes			874			(535)
Other comprehensive income			242			786
Uncertain tax positions			—			512
Other			80			271
Gross deferred tax assets			29,630			43,026
Less valuation allowances			(17,366)			(13,602)
Net deferred tax assets			12,264			29,424
Deferred tax liabilities:
Property and equipment			(12,914)			(29,035)
Net deferred tax (liabilities) assets		$	(650)		$	389
Foreign deferred tax (liabilities) assets		$	(874)		$	535
Domestic deferred tax assets (liabilities)			224			(146)
Net deferred tax (liabilities) assets		$	(650)		$	389

Schedule of Company’s gross uncertain tax positions

		December 31,
		2017			2016
Balance at beginning of year		$	1,489		$	1,684
Decrease in prior year tax positions			—			(14)
Increase in current year tax positions			—			157
Liability statute expiration			(1,489)			(338)
Balance at end of year		$	—		$	1,489

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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