Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Statements Of Operations
Operating revenues	$ 68,778,352	$ 58,274,912	$ 206,790,101	$ 184,430,124
Operating expenses:
Fuel	35,351,057	24,082,544	101,385,372	78,596,428
Production	4,383,225	5,557,226	12,466,858	13,532,362
Purchased power	5,925,351	6,306,942	18,744,592	18,436,395
Transmission	1,588,996	1,490,327	5,163,878	4,191,962
Distribution	3,268,367	3,270,196	9,089,035	9,262,570
Consumer accounts	1,330,126	1,347,065	4,085,071	4,089,150
Administrative, general and other	5,494,955	5,206,186	16,785,365	15,766,176
Depreciation and amortization	8,167,673	8,184,736	24,478,626	24,507,485
Total operating expenses	65,509,750	55,445,222	192,198,797	168,382,528
Interest expense
Long-term debt and other	4,059,234	5,238,781	14,058,833	15,702,093
Charged to construction	(515,030)	(288,968)	(1,414,606)	(711,608)
Interest expense, net	3,544,204	4,949,813	12,644,227	14,990,485
Net operating margins	(275,602)	(2,120,123)	1,947,077	1,057,111
Nonoperating margins:
Interest income	74,377	76,215	223,305	231,267
Allowance for funds used during construction	54,632	34,635	101,907	65,367
Capital credits, patronage dividends and other	32,586	0	89,827	7,329
Total nonoperating margins	161,595	110,850	415,039	303,963
Assignable margins	$ (114,007)	$ (2,009,273)	$ 2,362,116	$ 1,361,074