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Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Allocation of Plan Assets

The following tables summarize the fair values of the Rabbi Trust investment assets to fund CTWS’s SERP by major categories as of December 31, 2021 and 2020 :

												Fair Value Measurements at December 31, 2021
Asset Category						Total						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Money market funds						$	186					186						—						—
Mutual funds						2,691						2,691						—						—
Fixed income						920						920						—						—
Total						$	3,797					3,797						—						—

												Fair Value Measurements at December 31, 2020
Asset Category						Total						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Money market funds						$	83					83						—						—
Mutual funds						2,101						2,101						—						—
Fixed income						830						830						—						—
Total						$	3,014					3,014						—						—

Plan assets as of December 31 were as follows:

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
Fair value of assets at end of year:
Debt securities			$	100,036					95,935						$	5,541					5,684
			32		%				35		%				25		%				29		%
Equity securities			197,248						170,747						14,932						12,762
			64		%				61		%				69		%				66		%
Cash and equivalents			12,892						11,442						1,294						1,033
			4		%				4		%				6		%				5		%
Total			$	310,176					278,124						$	21,767					19,479

The following tables summarize the fair values of plan assets by major categories as of December 31, 2021 and 2020:

									Fair Value Measurements at December 31, 2021
Asset Category			Total						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Cash and cash equivalents			$	14,186					14,186						—						—
Equity securities (a)			212,180						212,180						—						—
Fixed Income (b)			105,577						38,608						66,969						—
Total			$	331,943					264,974						66,969						—

___________________________________

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

(b)Actively managed portfolio of fixed income securities with the goal to exceed the benchmark performance

									Fair Value Measurements at December 31, 2020
Asset Category			Total						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)
Cash and cash equivalents			$	12,475					12,475						—						—
Equity securities (a)			183,509						183,509						—						—
Fixed Income (b)			101,619						36,012						65,607						—
Total			$	297,603					231,996						65,607						—

___________________________________

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

(b)Actively managed portfolio of fixed income securities with the goal to exceed the benchmark performance

Schedule of Assumptions Used

Net periodic cost for the defined benefit plans and other postretirement benefits was calculated using the following weighted-average assumptions:

			Pension Benefits																		Other Benefits
			2021						2020						2019						2021						2020						2019
			%						%						%						%						%						%
Discount rate			2.29 - 2.48						3.05 - 3.23						3.04 - 4.16						2.18 - 2.41						2.59 - 3.18						2.52 - 4.09
Expected return on plan assets			6.50, 6.75						6.50, 6.75						7.00, 7.25						4.20, 6.50						4.20, 6.50						4.00, 7.00
Rate of compensation increase			4.00						4.00						4.00						N/A						N/A						N/A

Benefit obligations for the defined benefit plans and other postretirement benefits were calculated using the following weighted-average assumptions as of December 31:

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
			%						%						%						%
Discount rate			2.65 - 2.82						2.29 - 2.48						2.61 - 2.76						2.18 - 2.41
Rate of compensation increase			4.00						4.00						N/A						N/A

Schedule of Net Benefit Costs

Net periodic costs for the defined benefit plans and other postretirement benefits for the years ended December 31 was as follows:

			Pension Benefits																		Other Benefits
			2021						2020						2019						2021						2020						2019
Components of net periodic benefit cost
Service cost			$	9,730					8,659						5,947						$	1,115					900						581
Interest cost			9,415						10,484						8,506						806						956						775
Expected return on assets			(18,019)						(15,715)						(10,118)						(970)						(857)						(475)
Amortization of prior service cost			41						41						48						—						97						197
Recognized actuarial loss			6,901						4,971						3,984						257						229						240
Net periodic benefit cost			$	8,068					8,440						8,367						$	1,208					1,325						1,318

Schedule of Net Funded Status

The projected benefit obligations and the funded status of the defined benefit pension and other postretirement plans as of December 31 were as follows:

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
Change in benefit obligation
Benefit obligation at beginning of year			$	386,091					338,240						$	35,794					32,546
Service cost			9,730						8,659						1,115						900
Interest cost			9,415						10,484						806						956
Actuarial (gain)/loss			(5,477)						42,164						(2,235)						2,421
Implicit rate subsidy			—						—						(222)						(211)
Plan participants contributions			—						—						171						254
Administrative expenses paid			(144)						(163)						—						—
Benefits paid			(15,777)						(13,293)						(1,017)						(1,072)
Benefit obligation at end of year			$	383,838					386,091						$	34,412					35,794
Change in plan assets
Fair value of assets at beginning of year			$	278,124					243,521						$	19,479					17,226
Actual return on plan assets			34,826						32,869						2,460						2,383
Employer contributions			13,147						16,609						669						675
Plan participants contributions			—						—						171						254
Administrative expenses paid			(144)						(163)						(63)						(54)
Benefits paid			(15,777)						(14,712)						(949)						(1,005)
Fair value of plan assets at end of year			310,176						278,124						21,767						19,479
Funded status at end of year			$	(73,662)					(107,967)						$	(12,645)					(16,315)

Schedule of Amounts Recognized in Balance Sheet

The amounts recognized on the balance sheet as of December 31 were as follows:

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
Noncurrent assets			$	6,422					—						$	—					—
Current liabilities			(2,782)						(2,760)						(139)						(133)
Noncurrent liabilities			(77,302)						(105,207)						(12,506)						(16,182)
			$	(73,662)					(107,967)						$	(12,645)					(16,315)

Schedule of Regulatory Asset Recorded on the Projected Benefit Obligation of the Postretirement Benefit Plans

SJW Group recorded a regulatory asset on the projected benefit obligation of the postretirement benefit plans as follows:

			2021						2020
Funded status of obligation			$	86,307					124,282
Accrued benefit cost			(24,110)						(29,920)
Regulatory asset, amount to be recovered in future rates			$	62,197					94,362

Schedule of Expected Benefit Payments

Benefits expected to be paid in the next five years and in the aggregate for the five years thereafter are:

			Pension Plan						Other Postretirement Benefit Plan
2022			$	16,220					$	1,497
2023			16,385						1,632
2024			16,632						1,697
2025			16,896						1,722
2026			18,915						1,763
2027 - 2031			96,506						9,117

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