CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues
Electric	$ 202,485	$ 206,613	$ 605,716	$ 602,024
Gas	32,965	37,067	182,812	230,971
Other	416	361	1,041	1,112
Total Revenues	235,866	244,041	789,569	834,107
Operating Expenses
Cost of sales	93,061	98,045	327,884	370,523
Operating, general and administrative	63,056	66,332	195,725	203,254
Mountain States Transmission Intertie impairment	24,039	0	24,039	0
Property and other taxes	24,796	22,605	74,395	68,551
Depreciation	26,505	25,181	79,364	75,562
Total Operating Expenses	231,457	212,163	701,407	717,890
Operating Income	4,409	31,878	88,162	116,217
Interest Expense, net	(17,743)	(16,694)	(49,598)	(50,737)
Other Income	974	346	3,134	2,257
(Loss) Income Before Income Taxes	(12,360)	15,530	41,698	67,737
Income Tax Benefit (Expense)	8,588	(635)	(1,989)	(9,297)
Net (Loss) Income	$ (3,772)	$ 14,895	$ 39,709	$ 58,440
Average Common Shares Outstanding	37,201,051	36,262,246	36,723,105	36,254,159
Basic (Loss) Earnings per Average Common Share	$ (0.10)	$ 0.41	$ 1.09	$ 1.61
Diluted (Loss) Earnings per Average Common Share	$ (0.10)	$ 0.41	$ 1.08	$ 1.60
Dividends Declared per Average Common Share	$ 0.37	$ 0.36	$ 1.11	$ 1.08