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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Provision for income taxes for continuing operations (in thousands)

				Year ended				Three months ended				Year ended				Year ended
				December 31,				December 31,				September 30,				September 30,
				2017				2016				2016				2015
	Current:
	Federal			$	(1,763	)			693				4,807				1,803
	State				(429	)			185				1,165				524
					(2,192	)			878				5,972				2,327
	Deferred				9,521				19				1,879				1,568
	Total			$	7,329				897				7,851				3,895

Income tax reconciliation at statutory Federal income tax rate (in thousands)

		Year ended				Three months ended				Year ended				Year ended
		December 31,				December 31,				September 30,				September 30,
		2017				2016				2016				2015
Amount computed at statutory
Federal rate		$	16,723				777				6,797				3,396
State income taxes (net of Federal
income tax benefit)			2,476				115				1,002				504
Tax Cut and Jobs Act of 2017			(11,834	)			—				—				—
Other, net			(36	)			5				52				(5	)
Provision for income taxes		$	7,329				897				7,851				3,895

Deferred tax assets and deferred tax liabilities (in thousands)

		As of				As of				As of
		December 31,				December 31,				September 30,
		2017				2016				2016
Deferred tax liabilities:
Property and equipment		$	25,212				15,127				15,197
Depletion			660				776				526
Unrealized rents			1,166				1,786				1,823
Prepaid expenses			431				763				913
Gross deferred tax liabilities			27,469				18,452				18,459
Deferred tax assets:
Employee benefits and other			1,487				1,997				2,023
Gross deferred tax assets			1,487				1,997				2,023
Net deferred tax liability		$	25,982				16,455				16,436

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- References

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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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- Definition

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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- Definition

Tabular disclosure of deferred tax liabilities not recognized because of the exceptions to comprehensive recognition of deferred taxes, including a description of the temporary differences, events that would cause the temporary differences to become taxable, the cumulative amounts of the temporary differences and the amounts not recognized as deferred tax liabilities or a statement that the determination of the deferred tax liabilities is not practicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 740
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6487024&loc=d3e29054-158556

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=96869850&loc=d3e28200-109314

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

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