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Business Segments: (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Details of reportable segment
Total utility plant	$ 1,378,366	$ 1,262,915	$ 1,378,366	$ 1,262,915	$ 1,296,310
Other assets	226,015	202,127	226,015	202,127
Total Assets	1,604,381	1,465,042	1,604,381	1,465,042	1,501,433
GOLDEN STATE WATER COMPANY
Details of reportable segment
Depreciation on transportation equipment	80	$ 58	234	$ 179
Total utility plant	1,358,830		1,358,830		1,281,092
Total Assets	$ 1,481,909		$ 1,481,909		$ 1,389,222

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets except utility plant that are recognized.

+ References

No definition available.

+ Details

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of transportation equipment over the assets' useful lives.

+ References

No definition available.

+ Details

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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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.

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