Defined Benfit Plan (Tables)

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit costs for San Jose Water Company’s pension plan, its Executive Supplemental Retirement Plan and other postretirement benefit plan for the three and six months ended June 30, 2012 and 2011 are as follows:

	Three months ended June 30,					Six months ended June 30,
	2012			2011		2012			2011
Service cost	$	1,157		947		$	2,314		1,895
Interest cost	1,450			1,445		2,901			2,890
Other cost	1,166			738		2,332			1,473
Expected return on assets	(1,148		)	(1,105	)	(2,297		)	(2,209	)
	$	2,625		2,025		$	5,250		4,049

Schedule of Allocation of Plan Assets

The following tables summarize the fair values of plan assets by major categories as of June 30, 2012 and December 31, 2011:

		Fair Value Measurements at June 30, 2012
				Quoted Prices in Active Markets for Identical Assets		Significant Observable Inputs		Significant Unobservable Inputs
Asset Category	Benchmark	Total		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents		$	1,836	$	1,836	$	—	$	—
Actively Managed (a):
U.S. Small Cap Equity	Russell 2000	6,785		6,785		—		—
U.S. Large Cap Equity	Russell 1000 Growth	4,068		4,068		—		—
Emerging Market Equity	MSCI Emerging Markets Net	4,162		4,162		—		—
U.S. Small Mid Cap Equity	Russell 2500	2,000		2,000		—		—
Non-U.S. Large Cap Equity	MSCI EAFE Net	4,963		4,963		—		—
Passive Index Fund ETFs (b):
U.S. Large Cap Equity	S&P 500/Russell 1000 Growth	6,090		6,090		—		—
U.S. Small Mid Cap Equity	Russell 2500	681		681		—		—
U.S. Small Cap Equity	Russell 2000	136		136		—		—
U.S. Mid Cap Equity	Russell Mid Cap	66		66		—		—
Non-U.S. Large Cap Equity	MSCI EAFE Net	5,135		5,135		—		—
REIT	Nareit - Equity REITS	3,460		—		3,460		—
Fixed Income (c)	(c)	30,084		—		30,084		—
Total		$	69,466	$	35,922	$	33,544	$	—

The Plan has a current target allocation of 55% invested in a diversified array of equity securities to provide long-term capital appreciation and 45% invested in a diversified array of fixed income securities to provide preservation of capital plus generation of income.

(a) Actively managed portfolio of securities with the goal to exceed the stated benchmark performance.

(b) Open-ended fund of securities with the goal to track the stated benchmark performance.

(c) Actively managed portfolio of fixed income securities with the goal to exceed the Barclays Capital Aggregate Bond, Barclays Capital 1-3 Year Government/Credit, Citigroup World Government Bond Index, and Merrill Lynch High Yield Master II performance.

		Fair Value Measurements at December 31, 2011
				Quoted Prices in Active Markets for Identical Assets		Significant Observable Inputs		Significant Unobservable Inputs
Asset Category	Benchmark	Total		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents		$	4,301	$	4,301	$	—	$	—
Actively Managed (a):
U.S. Small Cap Equity	Russell 2000	6,303		6,303		—		—
U.S. Large Cap Equity	Russell 1000 Growth	3,716		3,716		—		—
Emerging Market Equity	MSCI Emerging Markets Net	3,547		3,547		—		—
U.S. Small Mid Cap Equity	Russell 2500	1,814		1,814		—		—
Non-U.S. Large Cap Equity	MSCI EAFE Net	4,271		4,271		—		—
Passive Index Fund ETFs (b):
U.S. Large Cap Equity	S&P 500/Russell 1000 Growth	5,525		5,525		—		—
U.S. Small Mid Cap Equity	Russell 2500	617		617		—		—
U.S. Small Cap Equity	Russell 2000	143		143		—		—
U.S. Mid Cap Equity	Russell Mid Cap	69		69		—		—
Non-U.S. Large Cap Equity	MSCI EAFE Net	4,356		4,356		—		—
REIT	Nareit - Equity REITS	3,213		—		3,213		—
Fixed Income (c)	(c)	27,209		—		27,209		—
Total		$	65,084	$	34,662	$	30,422	$	—

The Plan has a current target allocation of 55% invested in a diversified array of equity securities to provide long-term capital appreciation and 45% invested in a diversified array of fixed income securities to provide preservation of capital plus generation of income.

(a) Actively managed portfolio of securities with the goal to exceed the stated benchmark performance.

(b) Open-ended fund of securities with the goal to track the stated benchmark performance.

(c) Actively managed portfolio of fixed income securities with the goal to exceed the Barclays Capital Aggregate Bond, Barclays Capital 1-3 Year Government/Credit, Citigroup World Government Bond Index, and Merrill Lynch High Yield Master II performance.