Summary of Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Jun. 30, 2013	Jun. 30, 2013
Summary of Significant Accounting Policies (Additional Textual) [Abstract]
Capitalized general and administrative costs	$ 1,500,000	$ 900,000	$ 4,300,000	$ 2,300,000
Capitalized interest expense	(800,000)	(400,000)	(2,200,000)	(1,200,000)
Present value discounted percent of future net revenues of proved oil and natural gas reserves			10.00%
Average oil and natural gas prices					95.56	4.236	91.69	3.605
Net capitalized costs less related deferred income taxes exceeded the full-cost ceiling				13,700,000
Impairment charge of net capitalized costs	0	0	0	21,229,000
Deferred income tax credit				$ 7,500,000