CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Operating revenue	$ 184,404	$ 178,135	$ 450,403	$ 438,436
Operations:
Water production costs	70,614	66,489	171,956	158,119
Administrative and general	24,670	23,925	73,106	69,110
Other operations	17,657	17,658	50,332	59,213
Maintenance	4,575	4,377	12,896	14,742
Depreciation and amortization	14,505	13,720	43,625	41,383
Income taxes	11,165	10,387	19,567	19,477
Property and other taxes	5,414	5,218	16,564	13,802
Total operating expenses	148,600	141,774	388,046	375,846
Net operating income	35,804	36,361	62,357	62,590
Other income and expenses:
Non-regulated revenue	3,649	3,756	10,386	11,943
Non-regulated expenses, net	(2,825)	(2,697)	(8,482)	(8,491)
Income tax (expense) on other income and expenses	(330)	(422)	(765)	(1,383)
Net other income	494	637	1,139	2,069
Interest expense:
Interest expense	7,687	8,024	23,527	23,484
Less: capitalized interest	(540)	(798)	(1,619)	(2,647)
Net interest expense	7,147	7,226	21,908	20,837
Net income	$ 29,151	$ 29,772	$ 41,588	$ 43,822
Earnings per share
Basic (in dollars per share)	$ 0.61	$ 0.71	$ 0.91	$ 1.05
Diluted (in dollars per share)	$ 0.61	$ 0.71	$ 0.90	$ 1.05
Weighted average shares outstanding
Basic (in shares)	47,737	41,905	45,927	41,886
Diluted (in shares)	47,770	41,905	45,957	41,886
Dividends declared per share of common stock (in dollars per share)	$ 0.16000	$ 0.15750	$ 0.4800	$ 0.47250