Condensed Balance Sheets (USD $)	Mar. 31, 2015		Sep. 30, 2014
Current Assets:
Cash and cash equivalents	$ 586,982		$ 509,755
Oil, NGL and natural gas sales receivables	9,639,059		16,227,469
Refundable production taxes	599,371		625,996
Derivative contracts, net	10,490,170	[1]	1,650,563	[1]
Other	328,249		354,828
Total current assets	21,643,831		19,368,611
Properties and equipment at cost, based on successful efforts accounting:
Producing oil and natural gas properties	434,412,916		418,237,512
Non-producing oil and natural gas properties	8,805,553		10,260,717
Other	1,381,454		1,317,725
Total properties and equipment, at cost, based on successful efforts accounting	444,599,923		429,815,954
Less accumulated depreciation, depletion and amortization	(216,596,904)		(204,731,661)
Net properties and equipment	228,003,019		225,084,293
Investments	2,037,067		1,936,421
Derivative contracts, net			251,279	[1]
Total assets	251,683,917		246,640,604
Current Liabilities:
Accounts payable	5,094,559		7,034,773
Deferred income taxes	1,015,100		600,100
Income taxes payable	1,027,237		523,843
Accrued liabilities and other	886,574		1,290,858
Total current liabilities	8,023,470		9,449,574
Long-term debt	71,923,589		78,000,000
Deferred income taxes	39,646,907		37,363,907
Asset retirement obligations	2,735,026		2,638,470
Stockholders' equity:
Class A voting common stock, $.0166 par value; 24,000,000 shares authorized, 16,863,004 issued at March 31, 2015, and September 30, 2014	280,938		280,938
Capital in excess of par value	2,932,208		2,861,343
Deferred directors' compensation	2,951,400		3,110,351
Retained earnings	128,399,133		118,794,188
Stockholders' Equity	134,563,679		125,046,820
Less treasury stock, at cost; 330,636 shares at March 31, 2015, and 372,364 shares at September 30, 2014	(5,208,754)		(5,858,167)
Total stockholders' equity	129,354,925		119,188,653
Total liabilities and stockholders' equity	$ 251,683,917		$ 246,640,604

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