CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operating revenue	$ 131,397	$ 118,321	$ 229,546	$ 208,593
Operations:
Water production costs	44,745	41,834	76,703	72,289
Administrative and general	20,554	18,480	41,056	35,924
Other operations	15,738	14,749	30,373	28,315
Maintenance	5,288	5,158	10,487	10,109
Depreciation and amortization	12,373	10,638	24,961	21,430
Income taxes	8,638	7,091	7,397	8,499
Property and other taxes	4,506	4,087	9,066	7,990
Total operating expenses	111,842	102,037	200,043	184,556
Net operating income	19,555	16,284	29,503	24,037
Other income and expenses:
Non-regulated revenue	3,739	3,692	8,072	7,113
Non-regulated expenses, net	(3,509)	(3,691)	(6,933)	(7,237)
Gain on sale of non-utility property	62		62
Income tax (expense) benefit on other income and expenses	(112)		(478)	60
Net other income (expense)	180	1	723	(64)
Interest expense:
Interest expense	8,061	6,939	16,549	13,428
Less: capitalized interest	(516)	(1,035)	(1,232)	(1,854)
Net interest expense	7,545	5,904	15,317	11,574
Net income	$ 12,190	$ 10,381	$ 14,909	$ 12,399
Earnings per share
Basic (in dollars per share)	$ 0.29	$ 0.25	$ 0.36	$ 0.30
Diluted (in dollars per share)	$ 0.29	$ 0.25	$ 0.36	$ 0.30
Weighted average shares outstanding
Basic (in shares)	41,752	41,606	41,724	41,582
Diluted (in shares)	41,768	41,636	41,740	41,612
Dividends declared per share of common stock (in dollars per share)	$ 0.15375	$ 0.14875	$ 0.30750	$ 0.29750