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General - Real Estate Investments and Nonutility Properties (Details) $ in Thousands | Feb. 15, 2022 USD ($) | Oct. 29, 2021 USD ($) property | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | --- | --- | ---
Accounting Policies [Abstract] |  |  |  |
Land |  |  | $ 12,615 | $ 12,615
Buildings and improvements |  |  | 45,058 | 45,017
Subtotal |  |  | 57,673 | 57,632
Less accumulated depreciation and amortization |  |  | 16,251 | 15,951
Real estate investment property, total |  |  | $ 41,422 | $ 41,681
Property Two |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Gain on sale of real estate investments | $ 5,442 |  |  |
San Jose Water Company |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Number of properties sold | property |  | 2 |  |
Proceeds from sale of real estate held-for-investment |  | $ 13,150 |  |
San Jose Water Company | Property One |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Gain on sale of real estate investments |  | 7,230 |  |
Properties selling expenses |  | 277 |  |
San Jose Water Company | Property Two |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Properties selling expenses |  | 178 |  |
Deferred gain on sale of properties |  | $ 5,442 |  |

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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 + Details
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