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Subsequent Event (Details) - Note Payable 9.56 Percent Due 2031 - Golden State Water Company - USD ($) $ in Thousands		3 Months Ended
	May 24, 2021	Mar. 31, 2021
Subsequent Event [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		9.56%
Debt Instrument, Face Amount		$ 28,000
Debt Instrument, Basis Spread on Variable Rate		0.55%
Maximum [Member]
Subsequent Event [Line Items]
Debt Instrument Redemption Premium as Percentage of Par Value after Specified Period		3.00%
Subsequent Event [Member] | Forecast
Subsequent Event [Line Items]
Redemption price of debt instrument	$ 840
Debt Instrument Redemption Premium as Percentage of Par Value after Specified Period	3.00%

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- Definition

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- Definition

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- Definition

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+ References

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-Publisher FASB
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-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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