Notes Payable - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended			9 Months Ended		1 Months Ended	9 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		9 Months Ended	3 Months Ended	9 Months Ended
	Feb. 28, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Apr. 26, 2013 Prima Oil Company, Inc. [Member]	Apr. 30, 2012 CIT Capital USA Inc. [Member]	Sep. 30, 2013 CIT Capital USA Inc. [Member]	Jun. 22, 2007 CIT Capital USA Inc. [Member]	Sep. 30, 2013 CIT Capital USA Inc. [Member] Stout #2H, Groves #1H and Lucey #1H [Member]	Sep. 30, 2013 CIT Capital USA Inc. [Member] Marcellus Shale Wells [Member]	Sep. 30, 2013 CIT Capital USA Inc. [Member] Eighth Amendment [Member]	Sep. 30, 2013 ASD Credit Agreement [Member] Well	Sep. 30, 2013 ASD Credit Agreement [Member] acre Well	Apr. 26, 2013 ASD Credit Agreement [Member]	Sep. 30, 2013 Original Issue Discount [Member]	Sep. 30, 2013 A&R Credit Agreement [Member]	Sep. 30, 2013 A&R Credit Agreement [Member]	Feb. 28, 2013 A&R Credit Agreement [Member]
Credit Facilities [Line Items]
Financing agreement date								Jun. 22, 2007
Credit facility, face amount									$ 30,000,000				$ 50,000,000	$ 50,000,000	$ 50,000,000
Credit facility, maturity date								Jun. 15, 2010										Feb. 28, 2015
Line of credit, interest rate								1.50%				1.50%
Overriding royalty interest										1.50%	1.50%
Productive wells, commercial production period					30 days
Notes payable interest payment due dates description					Payment was due at maturity on June 15, 2010
Line of credit principal payment							125,000
Percentage of owned subsidiaries						100.00%
Number of gas wells in which the company owns working interest gross													13	13
Number of gas wells in which the company owns working interest net													7.60	7.60
Marcellus leased properties area														22,000
Original issue discount		3,000,000			3,000,000
Administrative fee													50,000	50,000
Interest Expense					5,600,000								2,424,322	7,280,196			786,793	1,726,376
Total OID amortization		855,049	845,755	288,114	1,988,918											1,500,000
Debt instrument increase borrowing capacity																			75,000,000
Interest rate																		Interest is due monthly at 10% plus the greater of 1% or the 3 month LIBOR rate
Maturity Date																		Feb. 28, 2015
LIBOR Rate																		1.00%
Debt instrument interest rate																		10.00%
Debt instrument LIBOR Rate																		11.00%
Debt instruments increase in principal amount																		25,000,000
Maximum termination fees on prepayment																		12,500,000
Prepayment penalty description																		The Termination Fee will be equal to $12.5 million less all interest payments actually made with respect to the $25 million loan prior to such date
Termination fee liability																	6,800,000	6,800,000
ASD Credit Agreement, closing date																		Apr. 26, 2014
Debt instrument percentage of contingent interest on non compliance of debt covenant																		1.00%
Principal balance and interest expense	25,000,000	375,000			1,515,000
Contingent interest amount					532,388
Principal balance of Interest amortization		375,000
Debt financing cost amortization period					3 months
Interest added back to principal					$ 1,439,349