Notes Payable (NPI Agreement) - Additional Information (Detail) - USD ($)
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6 Months Ended |
12 Months Ended |
Apr. 27, 2015 |
Jun. 30, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Morgan Stanley [Member] |
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| Debt Instrument [Line Items] |
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| Contingent borrowing capacity |
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$ 47,500,000
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| Net Profits Interest Agreement [Member] |
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| Debt Instrument [Line Items] |
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| Percentage of net profit related to NPI |
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6.50%
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| Percentage of net profit for subsequent borrowing |
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2.50%
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| Percentage of NPI earned |
2.53%
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1.00%
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| Net Profits Interest Agreement [Member] | Tranche B [Member] |
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| Debt Instrument [Line Items] |
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| Contingent borrowing capacity |
$ 47,500,000
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| Net Profits Interest Agreement [Member] | American Shale [Member] |
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| Debt Instrument [Line Items] |
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| Agreed amount to pay dues |
13,800,000
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| Net Profits Interest Agreement [Member] | Minimum [Member] |
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| Debt Instrument [Line Items] |
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| Minimum amount of NPI earned |
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$ 1,500,000
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| Net Profits Interest Agreement [Member] | Morgan Stanley [Member] |
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| Debt Instrument [Line Items] |
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| Discount related to NPI |
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$ 4,072,410
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| Interest expense related to accretion of discount |
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1,411,188
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$ 518,307
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| Net Profits Interest Agreement [Member] | Morgan Stanley [Member] | Proved Property [Member] |
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| Debt Instrument [Line Items] |
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| Discount related to NPI |
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3,339,376
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| Net Profits Interest Agreement [Member] | Morgan Stanley [Member] | Unproved Property [Member] |
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| Debt Instrument [Line Items] |
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| Discount related to NPI |
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$ 733,034
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| Net Profits Interest Agreement [Member] | Successor [Member] | Tranche B [Member] |
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| Debt Instrument [Line Items] |
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| Contingent borrowing capacity |
$ 10,000,000
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