Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,852,777	$ 4,362,963
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,741,781	3,492,954
Cost of removal of utility plant, net	(328,744)	(361,219)
Stock option grants	75,310	42,420
Changes in assets and liabilities which used cash, exclusive of changes and noncash transactions shown separately	3,968,568	6,580,050
Net cash provided by operating activities	12,309,692	14,117,168
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to utility plant and nonutility property	(10,781,425)	(6,883,039)
Proceeds from disposal of equipment	9,322	15,552
Net cash used in investing activities	(10,772,103)	(6,867,487)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from collection of notes	0	1,095,077
Borrowings under line-of-credit agreement	13,893,656	4,354,402
Repayments under line-of-credit agreement	(13,893,656)	(4,354,402)
Proceeds from issuance of stock (9,324 and 36,781 shares, respectively)	179,166	698,878
Cash dividends paid	(2,592,025)	(7,185,662)
Net cash used in financing activities	(2,412,859)	(5,391,707)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(875,270)	1,857,974
BEGINNING CASH AND CASH EQUIVALENTS	2,846,224	8,909,871
ENDING CASH AND CASH EQUIVALENTS	1,970,954	10,767,845
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	1,503,380	1,496,299
Income taxes paid	$ 1,686,000	$ 372,076