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General (Tables) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Major Streams of Revenue | The major streams of revenue for SJW Group are as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Revenue from contracts with customers | $ | 163,103 |  |  | 167,045 |  |  | $ | 422,545 |  |  | 414,344 |
Alternative revenue programs, net | 2,216 |  |  | 1,324 |  |  | 4,984 |  |  | 4,877 |
Other balancing and memorandum accounts, net | 639 |  |  | 1,532 |  |  | 3,637 |  |  | 11,743 |
Other regulatory mechanisms, net | (438) |  |  | (5,441) |  |  | (1,284) |  |  | (6,355) |
Rental income | 1,403 |  |  | 1,403 |  |  | 4,067 |  |  | 4,217 |
| $ | 166,923 |  |  | 165,863 |  |  | $ | 433,949 |  |  | 428,826 |
Schedule of Real Estate Investments | The major components of real estate investments as of September 30, 2021, and December 31, 2020, are as follows:
| September 30, 2021 |  | December 31, 2020
Land | $ | 14,168 |  |  | 14,168 |
Buildings and improvements | 44,597 |  |  | 43,961 |
Subtotal | 58,765 |  |  | 58,129 |
Less: accumulated depreciation and amortization | 15,655 |  |  | 14,783 |
Total | $ | 43,110 |  |  | 43,346 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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