Summary of Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended			6 Months Ended	9 Months Ended		12 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2011	Sep. 30, 2012 Restricted Stock [Member]	Sep. 30, 2012 Restricted Stock [Member]	Sep. 30, 2012 Restricted shares, participating securities [Member]	Sep. 30, 2012 Restricted shares, participating securities [Member]	Sep. 30, 2012 Stock options [Member]	Sep. 30, 2012 Stock options [Member]	Sep. 30, 2011 Stock options [Member]	Sep. 30, 2012 Class A [Member]	Mar. 31, 2012 Class B [Member]	Sep. 30, 2012 Class B [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Dividends declared	$ 0	$ 68,713			$ 27,643	$ 206,140												$ 0
Dividends paid					96,000	206,000													96,356
Cumulative annual dividends per share rate																				$ 0.26
Total options to purchase shares of the Company's common stock and restricted stock excluded from the calculations											151,051	151,051	233,349	233,349	1,085,152	1,085,152	1,024,500
Summary of Significant Accounting Policies (Additional Textual) [Abstract]
Capitalized general and administrative costs					1,700,000	1,300,000
Capitalized interest expense					1,000,000	800,000
Present value discounted percent of future net revenues of proved oil and natural gas reserves					10.00%
Average oil and natural gas prices							2.826	91.48	4.158	91.00
Net capitalized costs less related deferred income taxes exceeded the full-cost ceiling			23,000,000	21,300,000	2,300,000
Impairment charge of net capitalized costs	3,596,000		35,700,000	33,200,000	36,801,000	35,673,000
Deferred income tax credit			$ 12,700,000	$ 11,900,000	$ 1,300,000
Class B Common stock were converted into Class A					1,030,700
Conversion of stock conversion ratio					1