Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2013	Sep. 30, 2012
Current assets
Allowance for uncollectible accounts	$ 265,731	$ 209,615
Regulatory assets
Accumulated amortization of debt issuance cost	$ 523,787	$ 489,522
Common stockholders' equity
Common stock, par value	$ 5.00	$ 5.00
Commn stock, authorized shares	3,500,000	3,500,000
Common stock, shares outstanding	2,240,706	2,220,271
Common stock, shares issued	2,240,706	2,220,271