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General Revenue (Tables) | 9 Months Ended
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Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [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,
| 2018 |  | 2017 |  | 2018 |  | 2017
Revenue from contracts with customers | $ | 120,007 |  |  | 125,722 |  |  | $ | 294,319 |  |  | 290,146 |
Alternative revenue programs, net - WCMA | 4,193 |  |  | 1,333 |  |  | 7,794 |  |  | 11,248 |
Other balancing and memorandum accounts revenue, net * | (788 | ) |  | (3,868 | ) |  | (7,235 | ) |  | (9,979 | )
Rental income | 1,441 |  |  | 1,391 |  |  | 4,103 |  |  | 4,281 |
| $ | 124,853 |  |  | 124,578 |  |  | $ | 298,981 |  |  | 295,696 |
* The balances for three and nine months ended September 30, 2018, exclude $2,527 and $3,556, respectively, of amounts related to cost-recovery balancing accounts which upon adoption of Topic 606 are recorded as capitalized costs rather than revenue until recovery is approved by the CPUC. Prior to adoption of Topic 606, these amounts were recorded as revenue. For further discussion, please see Note 9.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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