Condensed Statements of Income (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Operating revenue	$ 64,940	$ 59,051	$ 180,232	$ 169,978
Operating expenses:
Fuel and purchased power	23,062	20,944	67,386	66,796
Operations and maintenance	15,470	15,925	49,655	48,286
Gain on sale of operating assets	(768)	(6,238)	(768)	(6,238)
Depreciation and amortization	6,921	6,043	20,244	16,461
Taxes - property	1,080	1,285	3,442	3,710
Total operating expenses	45,765	37,959	139,959	129,015
Operating income	19,175	21,092	40,273	40,963
Other income (expense):
Interest expense incurred	(4,147)	(4,422)	(12,900)	(15,705)
AFUDC - borrowed	66	210	334	2,011
Interest income	98	68	468	1,492
AFUDC - equity	116	266	558	2,503
Other income (expense), net	15	22	(137)	160
Total other income (expense)	(3,852)	(3,856)	(11,677)	(9,539)
Income before income taxes	15,323	17,236	28,596	31,424
Income tax expense	(4,813)	(3,158)	(8,464)	(7,310)
Net income	$ 10,510	$ 14,078	$ 20,132	$ 24,114