Assets and Liabilities Held for Sale - Additional Information (Detail) |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2015
USD ($)
a
Wells
|
Dec. 31, 2014
USD ($)
|
|
| Summary Of Assets And Liabilities Held For Sale [Line Items] | ||
| Depletion | $ 8,781,939 | $ 9,702,192 |
| Total assets held for sale | $ 13,460,614 | 14,301,375 |
| Marcellus Shale Wells [Member] | ||
| Summary Of Assets And Liabilities Held For Sale [Line Items] | ||
| Acres of Land Sold | a | 5,159 | |
| Number of wells | Wells | 12 | |
| Wetzel County West Virginia [Member] | ||
| Summary Of Assets And Liabilities Held For Sale [Line Items] | ||
| Depletion | $ 4,372,965 | |
| Total assets held for sale | $ 13,460,614 | $ 14,301,375 |