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General - Real Estate Investments and Nonutility Properties (Details) $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 15, 2022 USD ($) | Oct. 29, 2021 USD ($) property | Jun. 29, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2017 USD ($)
Accounting Policies [Abstract] |  |  |  |  |  |  |  |  |
Land |  |  |  | $ 12,900 |  | $ 12,900 |  | $ 12,615 |
Buildings and improvements |  |  |  | 45,334 |  | 45,334 |  | 45,017 |
Subtotal |  |  |  | 58,234 |  | 58,234 |  | 57,632 |
Less accumulated depreciation and amortization |  |  |  | 16,553 |  | 16,553 |  | 15,951 |
Real estate investment property, total |  |  |  | 41,681 |  | 41,681 |  | $ 41,681 |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Gain on sale of real estate investments |  |  | $ 3,000 | $ 0 | $ 3,000 | $ 0 | $ 3,000 |  |
Sales agreement, holdback amount |  |  |  |  |  |  |  |  | $ 3,000
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 https://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 https://asc.fasb.org/extlink&oid=126954810&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 https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228 + Details
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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