Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Cash flows from operating activities
Net income	$ 1,348,828	$ 1,641,623	$ 672,285
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,478,953	713,066	762,197
Unamortized debt issuance cost	46,782	33,851	29,271
Regulatory Amortizations	1,610,453	1,619,537	2,298,186
Stock issued for services and stock option expense	176,057	235,902	124,593
Pension adjustment	(321,993)	728,069	(1,942,095)
Loss (Gain) on sale of marketable securities	45,118	(126,466)	176,862
Deferred income taxes	(1,550,808)	1,472,093	(1,326,224)
Bad debt expense	185,506	219,468	146,773
(Increase) decrease in
Accounts receivable	(532,163)	(492,074)	(535,984)
Gas stored underground	(136,537)	(374,017)	2,868,181
Materials and supplies inventories	(413,340)	(124,634)	(96,006)
Prepaid expenses	709,023	628,391	(939,048)
Unrecovered gas costs	556,381	(223,756)	(960,728)
Deferred regulatory costs	(472,670)	(26,898)	(552,964)
Other	(52,755)	(93,641)	(8,244)
Increase (decrease) in
Accounts payable	514,365	89,373	(806,359)
Accrued expenses	49,567	(28,268)	(178,843)
Customer deposits and accrued interest	(48,749)	(40,118)	595,694
Deferred compensation	(89,087)	(82,667)	(160,439)
Deferred pension costs & post-retirement benefits	(493,144)	(1,618,042)	2,067,775
Other liabilities and deferred credits	171,050	125,611	(74,758)
Net cash provided by operating activities	2,780,837	4,276,403	2,160,125
Cash flows from investing activities
Purchase of securities available-for-sale	(2,174,041)	(1,552,126)	(1,562,639)
Sale of securities available-for-sale	2,097,174	1,576,686	1,504,664
Capital expenditures	(3,859,302)	(4,694,677)	(5,054,209)
Net cash used in investing activities	(3,936,169)	(4,670,117)	(5,112,184)
Cash flows from financing activities
Proceeds under lines-of-credit	16,110,235	15,744,398	17,523,521
Repayment of lines-of-credit	(17,072,100)	(17,360,309)	(17,089,935)
Debt issuance cost expense	(29,407)	(69,486)	(1,975)
Cash received from sale of stock	673,140	2,233,548	2,861,340
Dividends paid	(774,896)	(548,150)	(194,840)
Proceeds under short-term debt		750,000
Proceeds under long-term debt	3,952,296	1,150,732	1,010,965
Repayment of short-term debt	(500,000)	(500,000)
Repayment of long-term debt	(1,100,243)	(1,115,033)	(979,451)
Net cash provided by financing activities	1,259,025	285,700	3,129,625
Net increase (decrease) in cash	103,693	(108,014)	177,566
Cash and cash equivalents at beginning of year	69,552	177,566
Cash and cash equivalents at end of year	173,245	69,552	177,566
Cash paid during the period for
Interest	894,820	926,763	887,958
Income taxes	1,668,438	152,078	727,325
Non-cash investment activities-retirement of assets	$ 198,302	$ 225,506	$ 289,637