Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATING REVENUE	$ 51,149	$ 43,696
OPERATING EXPENSE:
Purchased water	13,577	7,416
Power	865	1,014
Groundwater extraction charges	2,946	4,508
Other production costs	2,756	2,592
Total production costs	20,144	15,530
Administrative and general	10,548	9,636
Maintenance	2,989	3,048
Property taxes and other non-income taxes	2,435	2,087
Depreciation and amortization	8,308	7,794
Total operating expense	44,424	38,095
OPERATING INCOME	6,725	5,601
OTHER (EXPENSE) INCOME:
Interest on long-term debt	(4,680)	(4,256)
Mortgage and other interest expense	(395)	(475)
Dividend income	60	60
Other, net	198	113
Income before income taxes	1,908	1,043
Provision for income taxes	799	433
NET INCOME	1,109	610
Other comprehensive loss, net	(11)	(11)
COMPREHENSIVE INCOME	$ 1,098	$ 599
EARNINGS PER SHARE
Basic	$ 0.06	$ 0.03
Diluted	$ 0.06	$ 0.03
DIVIDENDS PER SHARE	$ 0.18	$ 0.17
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic	18,611,752	18,570,140
Diluted	18,821,087	18,775,385