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General (Tables) | 6 Months Ended
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Jun. 30, 2021
Accounting Policies [Abstract] |
Major Streams of Revenue | The major streams of revenue for SJW Group are as follows:
| Three months ended June 30, |  | Six months ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Revenue from contracts with customers | $ | 147,204 |  |  | 142,163 |  |  | $ | 259,442 |  |  | 247,299 |
Alternative revenue programs, net | 2,656 |  |  | 3,049 |  |  | 2,768 |  |  | 3,553 |
Other balancing and memorandum accounts, net | 1,477 |  |  | 1,629 |  |  | 2,998 |  |  | 10,211 |
Other regulatory mechanisms, net | (416) |  |  | (1,076) |  |  | (846) |  |  | (914) |
Rental income | 1,320 |  |  | 1,444 |  |  | 2,664 |  |  | 2,814 |
| $ | 152,241 |  |  | 147,209 |  |  | $ | 267,026 |  |  | 262,963 |
Schedule of Real Estate Investments | The major components of real estate investments as of June 30, 2021, and December 31, 2020, are as follows:
| June 30, 2021 |  | December 31, 2020
Land | $ | 14,198 |  |  | 14,168 |
Buildings and improvements | 44,191 |  |  | 43,961 |
Subtotal | 58,389 |  |  | 58,129 |
Less: accumulated depreciation and amortization | 15,363 |  |  | 14,783 |
Total | $ | 43,026 |  |  | 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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