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Defined Benefit Plan | 3 Months Ended
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Mar. 31, 2018
Retirement Benefits [Abstract] |
DEFINED BENEFIT PLAN | Defined Benefit Plan San Jose Water Company sponsors a noncontributory defined benefit pension plan for its eligible employees. Employees hired before March 31, 2008, are entitled to receive retirement benefits using a formula based on the employee’s three highest years of compensation (whether or not consecutive). For employees hired on or after March 31, 2008, benefits are determined using a cash balance formula based on compensation credits and interest credits for each employee. Officers hired before March 31, 2008, are eligible to receive additional retirement benefits under the Executive Supplemental Retirement Plan, and officers hired on or after March 31, 2008, are eligible to receive additional retirement benefits under the Cash Balance Executive Supplemental Retirement Plan. Both plans are non-qualified plans in which only officers and other designated members of management may participate. San Jose Water Company also provides health care and life insurance benefits for retired employees under the San Jose Water Company Social Welfare Plan. The components of net periodic benefit costs for San Jose Water Company’s pension plan, its Executive Supplemental Retirement Plan, Cash Balance Executive Supplemental Retirement Plan and Social Welfare Plan for the three months ended March 31, 2018, and 2017 are as follows:
| Three months ended March 31,
| 2018 |  | 2017
Service cost | $ | 1,596 |  |  | 1,330 |
Interest cost | 1,877 |  |  | 1,903 |
Other cost | 1,133 |  |  | 1,038 |
Expected return on assets | (2,427 | ) |  | (2,070 | )
| $ | 2,179 |  |  | 2,201 |
Effective January 1, 2018, SJW Group adopted ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Costs.” The new standard requires retrospective presentation in the income statement of the service cost component and the other components of net periodic cost and net periodic postretirement benefit cost and prospective presentation from date of adoption for the capitalization in assets of only the service cost component of net periodic cost and net periodic postretirement benefit cost. As of March 31, 2017, utility plant included $128 of capitalized pension non-service cost. The components of net periodic benefit cost have been recorded in the consolidated statements of comprehensive income as follows:
| Three months ended March 31,
| 2018 |  | 2017
Other production expenses | $ | 423 |  |  | 348 |
Administrative and general expense | 895 |  |  | 745 |
Maintenance expense | 278 |  |  | 237 |
Pension non-service costs | 583 |  |  | 871 |
| $ | 2,179 |  |  | 2,201 |
The following tables summarize the fair values of plan assets by major categories as of March 31, 2018, and December 31, 2017:
|  |  | Fair Value Measurements at March 31, 2018
|  |  |  |  | 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 |  |  | $ | 5,928 |  |  | $ | 5,928 |  |  | $ | — |  |  | $ | — |
Actively Managed (a): |  |  |  |  |  |  |  |  |
All Cap Equity | Russell 3000 Value |  | 6,190 |  |  | 6,151 |  |  | 39 |  |  | — |
U.S. Large Cap Equity | Russell 1000, Russell 1000 Growth, Russell 1000 Value |  | 50,495 |  |  | 50,495 |  |  | — |  |  | — |
U.S. Mid Cap Equity | Russell Mid Cap, Russell Mid Cap Growth, Russell Mid Cap Value |  | 9,376 |  |  | 9,376 |  |  | — |  |  | — |
U.S. Small Cap Equity | Russell 2000, Russell 2000 Growth, Russell 2000 Value |  | 9,306 |  |  | 9,306 |  |  | — |  |  | — |
Non-U.S. Large Cap Equity | MSCI EAFE |  | 5,949 |  |  | 5,949 |  |  | — |  |  | — |
REIT | NAREIT - Equity REIT’S |  | 5,864 |  |  | — |  |  | 5,864 |  |  | — |
Fixed Income (b) | (b) |  | 44,873 |  |  | — |  |  | 44,873 |  |  | — |
Total |  |  | $ | 137,981 |  |  | $ | 87,205 |  |  | $ | 50,776 |  |  | $ | — |
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 and cash 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) | Actively managed portfolio of fixed income securities with the goal to exceed the Barclays 1-5 Year Government/Credit, Barclays Intermediate Government/Credit, and Merrill Lynch Preferred Stock Fixed Rate.
|  |  | Fair Value Measurements at December 31, 2017
|  |  |  |  | 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 |  |  | $ | 8,207 |  |  | $ | 8,207 |  |  | $ | — |  |  | $ | — |
Actively Managed (a): |  |  |  |  |  |  |  |  |
All Cap Equity | Russell 3000 Value |  | 6,413 |  |  | 6,376 |  |  | 37 |  |  | — |
U.S. Large Cap Equity | Russell 1000, Russell 1000 Growth, Russell 1000 Value |  | 50,351 |  |  | 50,351 |  |  | — |  |  | — |
U.S. Mid Cap Equity | Russell Mid Cap, Russell Mid Cap Growth, Russell Mid Cap Value |  | 9,358 |  |  | 9,358 |  |  | — |  |  | — |
U.S. Small Cap Equity | Russell 2000, Russell 2000 Growth, Russell 2000 Value |  | 8,725 |  |  | 8,725 |  |  | — |  |  | — |
Non-U.S. Large Cap Equity | MSCI EAFE |  | 5,973 |  |  | 5,973 |  |  | — |  |  | — |
REIT | NAREIT - Equity REIT’S |  | 6,143 |  |  | — |  |  | 6,143 |  |  | — |
Fixed Income (b) | (b) |  | 44,994 |  |  | — |  |  | 44,994 |  |  | — |
Total |  |  | $ | 140,164 |  |  | $ | 88,990 |  |  | $ | 51,174 |  |  | $ | — |
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 and cash 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) | Actively managed portfolio of fixed income securities with the goal to exceed the Barclays 1-5 Year Government/Credit, Barclays Intermediate Government/Credit, and Merrill Lynch Preferred Stock Fixed Rate.
In 2018, San Jose Water Company expects to make required and discretionary cash contributions of up to $7,450 to the pension plans and Social Welfare Plan. For the three months ended March 31, 2018, there have been no contributions to the pension plans and Social Welfare Plan.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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