Condensed Balance Sheets (USD $)	Mar. 31, 2014		Sep. 30, 2013
Current Assets:
Cash and cash equivalents	$ 1,816,400		$ 2,867,171
Oil, NGL and natural gas sales receivables	17,105,718		13,720,761
Refundable production taxes	666,180		662,051
Derivative contracts, net		[1]	425,198	[1]
Other	185,725		129,998
Total current assets	19,774,023		17,805,179
Properties and equipment at cost, based on successful efforts accounting:
Producing oil and natural gas properties	317,646,446		304,889,145
Non-producing oil and natural gas properties	9,151,030		8,932,905
Furniture and fixtures	743,493		737,368
Total properties and equipment, at cost, based on successful efforts accounting	327,540,969		314,559,418
Less accumulated depreciation, depletion and amortization	(193,194,710)		(186,641,291)
Net properties and equipment	134,346,259		127,918,127
Investments	1,664,914		1,574,642
Refundable production taxes	272,305		540,482
Total assets	156,057,501		147,838,430
Current Liabilities:
Accounts payable	6,532,367		8,409,634
Derivative contracts, net	1,292,329	[1]		[1]
Deferred income taxes	43,100		127,100
Income taxes payable	865,882		751,992
Accrued liabilities and other	768,795		1,011,865
Total current liabilities	9,502,473		10,300,591
Long-term debt	6,000,000		8,262,256
Deferred income taxes	32,763,907		31,226,907
Asset retirement obligations	2,539,172		2,393,190
Stockholders' equity:
Class A voting common stock, $.0166 par value; 24,000,000 shares authorized, 8,431,502 issued at March 31, 2014, and September 30, 2013	140,524		140,524
Capital in excess of par value	2,590,501		2,587,838
Deferred directors' compensation	2,946,032		2,756,526
Retained earnings	105,705,125		96,454,449
stockholders' equity	111,382,182		101,939,337
Less treasury stock, at cost; 194,830 shares at March 31, 2014, and 200,248 shares at September 30, 2013	(6,130,233)		(6,283,851)
Total stockholders' equity	105,251,949		95,655,486
Total liabilities and stockholders' equity	$ 156,057,501		$ 147,838,430

[1] See Fair Value Measurements section for further disclosures regarding fair value of financial instruments.