Condensed Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Oil, NGL and natural gas sales	$ 14,100,844	$ 9,565,898	$ 26,859,798	$ 21,310,175
Lease bonuses and rentals	140,941	166,727	515,333	1,921,918
Gains (losses) on derivative contracts	(1,811,359)	590,912	(918,666)	368,833
Income from partnerships	151,560	113,373	305,956	240,317
	12,581,986	10,436,910	26,762,421	23,841,243
Costs and expenses:
Lease operating expenses	2,638,342	2,051,487	5,934,904	4,316,399
Production taxes	412,886	343,852	716,439	782,351
Exploration costs	15,412	41,688	35,179	355,058
Depreciation, depletion and amortization	6,258,623	4,940,961	11,897,643	9,083,374
Provision for impairment	63,476	217,262	218,441	580,809
Loss (gain) on asset sales, interest and other	(211,896)	29,537	(168,710)	(47,504)
General and administrative	1,643,656	1,606,157	3,541,740	3,303,680
	10,820,499	9,230,944	22,175,636	18,374,167
Income before provision for income taxes	1,761,487	1,205,966	4,586,785	5,467,076
Provision for income taxes	739,000	530,000	1,416,000	1,379,000
Net income	$ 1,022,487	$ 675,966	$ 3,170,785	$ 4,088,076
Basic and diluted earnings per common share (Note 3) (in Dollars per share)	$ 0.12	$ 0.08	$ 0.38	$ 0.49
Basic and diluted weighted average shares outstanding:
Common shares (in Shares)	8,254,226	8,249,954	8,252,145	8,253,079
Unissued, directors' deferred compensation shares (in Shares)	113,258	133,851	113,045	133,387
(in Shares)	8,367,484	8,383,805	8,365,190	8,386,466
Dividends declared per share of common stock and paid in period (in Dollars per share)	$ 0.07	$ 0.07	$ 0.14	$ 0.14