Summary of Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended				3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2012 Restricted Stock [Member]	Jun. 30, 2012 Restricted Stock [Member]	Jun. 30, 2012 Stock options [Member]	Jun. 30, 2012 Stock options [Member]	Jun. 30, 2012 Class A [Member]	Mar. 31, 2012 Class B [Member]	Jun. 30, 2012 Class B [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Dividends declared	$ 0	$ 68,713	$ 27,643	$ 137,427									$ 0	$ 96,356
Cumulative dividends entitled to be paid															$ 0.9267
Stock excluded from the calculations									139,963	139,963	1,293,568	1,293,568
Total options to purchase shares of the Company's common stock excluded from the calculations									231,683	231,683		1,076,000
Summary of Significant Accounting Policies (Additional Textual) [Abstract]
Capitalized general and administrative costs			1,100,000	900,000
Capitalized interest expense			600,000	300,000
Present value discounted percent of future net revenues of proved oil and natural gas reserves			10.00%
Average oil and natural gas prices					3.146	92.17	4.209	86.6
Net capitalized costs less related deferred income taxes exceeded the full-cost ceiling			21,300,000	23,000,000
Impairment charge of net capitalized costs	33,200,000	35,700,000	33,200,000	35,700,000	33,200,000	33,200,000	35,700,000	35,700,000
Deferred income tax credit			11,900,000	12,700,000
Class B Common stock were converted into Class A			1,030,700
Conversion of stock conversion ratio			1
Carrying value of Company's Borrowings under senior Secured revolving Credit Agreement	$ 60,000,000		$ 60,000,000		$ 60,000,000	$ 60,000,000