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Employee Benefit Plans 5 (Details) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee benefit plans
Regulatory adjustment	$ (1,277)	$ (483)	$ (593)
GSWC
Employee benefit plans
Regulatory adjustment	(1,300)	483	593
Bear Valley Electric Service, Inc.
Employee benefit plans
Regulatory adjustment	$ (246)	$ (200)	$ (205)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the value of other assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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