Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

Summarized quarterly financial data is as follows:

	2012 Quarter Ended
	March		June	September	December (1)
Operating revenue	$	51,149	65,575	82,374	62,449
Operating income	6,725		13,585	20,877	14,110
Net income	1,109		5,201	10,084	5,924
Comprehensive income	1,098		5,260	10,125	5,871
Earnings per share:
—Basic	0.06		0.28	0.54	0.32
—Diluted	0.06		0.28	0.53	0.31
Market price range of stock:
—High	24.91		24.34	25.64	26.62
—Low	22.96		22.81	22.95	22.69
Dividend per share	0.18		0.18	0.18	0.18
	2011 Quarter Ended
	March		June	September	December (1)
Operating revenue	$	43,696	59,007	73,914	62,338
Operating income	5,601		13,784	18,486	16,520
Net income	610		5,451	8,215	6,602
Comprehensive income	599		5,479	7,988	6,727
Earnings per share:
—Basic	0.03		0.29	0.44	0.36
—Diluted	0.03		0.29	0.44	0.35
Market price range of stock:
—High	26.40		24.24	24.80	24.93
—Low	22.48		21.99	21.16	21.10
Dividend per share	0.17		0.17	0.17	0.17

(1) During the quarter ended December 31, 2012, the Company recorded revenues of $3,550 related to the recognition of certain San Jose Water Company balancing and memorandum accounts as the Company concluded that it was probable that these amounts would be collected. Of this amount, $240 represents a net over-collection of revenues generated during the quarter ended December 31, 2012 and $3,790 represents a net-under-collection of revenues which should have been recognized as revenue during the quarter ended September 30, 2012. See Note 1 of the Notes to the Consolidated Financial Statements for further discussion on balancing and memorandum accounts. During the quarter ended December 31, 2011, the Company recorded revenues of $5,740 related to the recognition of San Jose Water Company's MCRAM which was authorized for recovery by the CPUC on December 27, 2011.