CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Operating revenue	$ 169,254	$ 146,349	$ 398,800	$ 354,942
Operations:
Water production costs	61,593	54,634	138,296	126,923
Administrative and general	21,646	17,794	62,702	53,718
Other operations	17,506	14,889	47,879	43,204
Maintenance	4,651	4,853	15,138	14,962
Depreciation and amortization	12,729	10,934	37,690	32,364
Income taxes	15,881	12,825	23,278	21,324
Property and other taxes	5,170	4,555	14,236	12,545
Total operating expenses	139,176	120,484	339,219	305,040
Net operating income	30,078	25,865	59,581	49,902
Other income and expenses:
Non-regulated revenue	3,425	3,850	11,497	10,963
Non-regulated expenses, net	(6,489)	(2,214)	(13,422)	(9,451)
Gain on sale of non-utility property		33	62	33
Income tax benefit (expense) on other income and expenses	1,254	(674)	776	(614)
Net other income (expense)	(1,810)	995	(1,087)	931
Interest expense:
Interest expense	8,007	6,958	24,556	20,386
Less: capitalized interest	(674)	(484)	(1,906)	(2,338)
Net interest expense	7,333	6,474	22,650	18,048
Net income	$ 20,935	$ 20,386	$ 35,844	$ 32,785
Earnings per share
Basic (in dollars per share)	$ 0.50	$ 0.49	$ 0.86	$ 0.79
Diluted (in dollars per share)	$ 0.50	$ 0.49	$ 0.86	$ 0.79
Weighted average shares outstanding
Basic (in shares)	41,780	41,622	41,743	41,595
Diluted (in shares)	41,789	41,648	41,756	41,624
Dividends declared per share of common stock (in dollars per share)	$ 0.15375	$ 0.14875	$ 0.46125	$ 0.44625