Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Current assets
Allowance for uncollectible accounts	$ 32,132	$ 46,080	$ 35,884
Regulatory assets
Accumulated amortization of debt issuance cost	$ 455,139	$ 443,854	$ 408,660
Common stockholders' equity
Common stock, par value	$ 5.00	$ 5.00	$ 5.00
Commn stock, authorized shares	3,500,000	3,500,000	3,500,000
Common stock, shares outstanding	1,823,967	1,787,769	1,148,628
Common stock, shares issued	1,823,967	1,787,769	1,148,628