Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Income (Unaudited) [Abstract]
Utility operating revenues	$ 4,750,563	$ 4,082,326	$ 20,175,835	$ 19,953,527
Natural gas purchased	1,861,956	1,427,410	9,134,862	9,046,301
Gross margin	2,888,607	2,654,916	11,040,973	10,907,226
Cost and expense [Abstract]
Operating and maintenance expense	1,884,517	1,637,330	5,500,405	5,307,817
Taxes other than income taxes	447,042	382,943	1,337,278	1,161,296
Depreciation	407,641	178,879	1,028,002	525,199
Other deductions, net	85,786	32,401	195,361	125,009
Total costs and expenses	2,824,986	2,231,553	8,061,046	7,119,321
Utility operating income	63,621	423,363	2,979,927	3,787,905
Other income and (expense) [Abstract]
Interest expense	(216,546)	(230,967)	(670,225)	(686,912)
Non-utility expense	(2,058)	(4,297)	(7,512)	(25,068)
Other income	1,591	5,325	12,943	6,473
Investment income	21,846	37,355	176,851	83,261
Rental income	12,138	12,138	36,414	36,414
Net income from utility operations, before income tax	(119,408)	242,917	2,528,398	3,202,073
Income tax benefit (expense), current	(1,800,484)	(99,638)	(2,617,893)	(1,453,469)
Income tax benefit (expense), deferred	1,848,227	14,833	1,699,096	151,908
Total tax benefit (expense)	47,743	(84,805)	(918,797)	(1,301,561)
Net income	(71,665)	158,112	1,609,601	1,900,512
Other comprehensive income (loss)	(148,553)	(231,057)	(406,817)	(97,589)
Total comprehensive income (loss)	$ (220,218)	$ (72,945)	$ 1,202,784	$ 1,802,923
Weighted average earnings per share [Abstract]
basic:	$ (0.04)	$ 0.10	$ 0.93	$ 1.24
diluted:	$ (0.04)	$ 0.10	$ 0.92	$ 1.23
Weighted average shares outstanding - basic	1,747,035	1,546,044	1,736,357	1,528,053
Weighted average shares outstanding - diluted	1,772,739	1,568,501	1,756,123	1,539,053