CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Operating revenue	$ 154,555	$ 143,552	$ 265,999	$ 260,301
Operations:
Water production costs	59,645	52,678	101,342	91,630
Administrative and general	23,155	22,167	48,436	45,185
Other operations	17,030	17,729	32,675	41,555
Maintenance	4,188	4,605	8,321	10,365
Depreciation and amortization	14,491	13,712	29,120	27,663
Income taxes	9,548	9,062	8,402	9,090
Property and other taxes	5,715	3,977	11,150	8,584
Total operating expenses	133,772	123,930	239,446	234,072
Net operating income	20,783	19,622	26,553	26,229
Other income and expenses:
Non-regulated revenue	3,215	4,051	6,737	8,187
Non-regulated expenses, net	(3,240)	(3,695)	(5,657)	(5,794)
Income tax benefit (expense) on other income and expenses	16	(138)	(435)	(961)
Net other (expense) income	(9)	218	645	1,432
Interest expense:
Interest expense	7,803	7,821	15,840	15,460
Less: capitalized interest	(539)	(946)	(1,079)	(1,849)
Net interest expense	7,264	6,875	14,761	13,611
Net income	$ 13,510	$ 12,965	$ 12,437	$ 14,050
Earnings per share
Basic (in dollars per share)	$ 0.28	$ 0.31	$ 0.28	$ 0.34
Diluted (in dollars per share)	$ 0.28	$ 0.31	$ 0.28	$ 0.34
Weighted average shares outstanding
Basic (in shares)	47,729	41,911	45,004	41,877
Diluted (in shares)	47,760	41,911	45,034	41,877
Dividends declared per share of common stock (in dollars per share)	$ 0.16000	$ 0.15750	$ 0.32000	$ 0.31500