Interest expense related to accretion of discount.

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- Definition

Net Profits Interest

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Net Profits Interest Percent

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- Definition

Obligations retirement description.

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- Definition

Percentage Of Net Profit

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- Definition

Percentage Of Net Profit For Subsequent Borrowing

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(b))
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- Definition

Amount after tax of income (loss) attributable to redeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Notes Payable (NPI Agreement) - Additional Information (Detail) - USD ($)			3 Months Ended
	Aug. 17, 2016	Apr. 27, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2014
American Shale [Member]
Debt Instrument [Line Items]
Borrower's obligation retirement description			The Forbearance further provides that the Borrower has the option to retire all obligations due to the Lenders, including the NPI, for $142,384,848, provided that the Borrower enters into definitive documentation with a third party by November 15, 2016 to finance the repurchase, and that such repurchase occurs by December 31, 2016. Both dates can be extended by thirty days to accommodate regulatory requirements, if necessary.
American Shale [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Minimum amount of NPI earned	$ 142,384,848
Morgan Stanley [Member] \| American Shale [Member]
Debt Instrument [Line Items]
Contingent borrowing capacity			$ 47,500,000
Net Profits Interest Agreement [Member]
Debt Instrument [Line Items]
Percentage of net profit related to NPI			6.50%
Percentage of net profit for subsequent borrowing			2.50%
Percentage of NPI earned		2.53%	1.00%
Net Profits Interest Agreement [Member] \| Tranche B [Member]
Debt Instrument [Line Items]
Contingent borrowing capacity		$ 47,500,000
Net Profits Interest Agreement [Member] \| American Shale [Member]
Debt Instrument [Line Items]
Agreed amount to pay dues		13,800,000
Net Profits Interest Agreement [Member] \| Amended Credit Agreement [Member] \| Tranche B [Member]
Debt Instrument [Line Items]
Contingent borrowing capacity		$ 10,000,000
Net Profits Interest Agreement [Member] \| Morgan Stanley [Member]
Debt Instrument [Line Items]
Discount related to NPI					$ 4,072,410
Interest expense related to accretion of discount			$ 535,729	$ 222,131
Net Profits Interest Agreement [Member] \| Morgan Stanley [Member] \| Proved Property [Member]
Debt Instrument [Line Items]
Discount related to NPI					3,339,376
Net Profits Interest Agreement [Member] \| Morgan Stanley [Member] \| Unproved Property [Member]
Debt Instrument [Line Items]
Discount related to NPI					$ 733,034
Net Profits Interest Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Minimum amount of NPI earned			$ 1,500,000