Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2012	Sep. 30, 2011
Current assets
Allowance for uncollectible accounts	$ 209,615	$ 46,080
Regulatory assets
Accumulated amortization of debt issuance cost	$ 489,522	$ 443,854
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	2,220,271	1,787,769
Common stock, shares issued	2,220,271	1,787,769