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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Summary of the Provision for Income Taxes

The provision for income taxes consists of the following:

	Year Ended December 31,
	2018				2017				2016
Current
Federal	$	230			$	(965	)		$	8,337
State and local	161				(39		)		518
Foreign	72				—				—
Total current expense (benefit)	463				(1,004		)		8,855
Deferred
Federal	4,611				(2,221		)		537
State and local	48				416				2
Foreign	—				—				—
Total deferred income tax expense (benefit)	4,659				(1,805		)		539
Total income tax expense (benefit)	$	5,122			$	(2,809	)		$	9,394

Schedule of the Reconciliation from the Applicable Statutory Income Tax Rates

The reconciliations from the applicable statutory income tax rates to income tax (benefit) expense are as follows:

	Year Ended December 31,
	2018				2017				2016
At statutory rate	$	5,000			$	6,551			$	6,931
Non-deductible interest expense	—				—				1,948
State taxes, net of US federal benefit	209				377				339
Foreign taxes	72				—				—
Federal tax deductions	238				(73		)		(679		)
Change in applicable tax rate	144				(8,468		)		—
Provision to return permanent difference	(129		)		(767		)		933
Refund claims	(120		)		(201		)		—
Fuel tax credit	(243		)		(166		)		—
Foreign tax credit	(49		)		—				—
Other	—				(62		)		(78		)
Total income tax expense (benefit)	$	5,122			$	(2,809	)		$	9,394

Summary of Significant Components of Deferred Tax Assets

Significant components of the Company’s deferred tax assets for federal and state income taxes are as follows:

	Year Ended December 31,
	2018				2017
Deferred tax assets:
Reserves and accruals	$	918			$	176
Prepaid expenses and other	1,086				—
Federal net operating losses	7,391				—
State net operating losses	106				—
Total gross deferred tax assets	9,501				176
Deferred tax liabilities:
Prepaid expenses and other	—				(988		)
Depreciation and amortization	(27,399		)		(12,427		)
Total gross deferred tax liabilities	(27,399		)		(13,415		)
Noncurrent deferred tax liabilities, net	$	(17,898	)		$	(13,239	)

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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