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Balancing and Memorandum Account Recovery Procedures (Tables) | 3 Months Ended
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Mar. 31, 2017
Regulated Operations [Abstract] |
Public Utilities General Disclosures |
| Three months ended March 31, 2017 |  | Three months ended March 31, 2016
Beginning Balance |  | Revenue Increase (Reduction) |  | Refunds (Collections) |  | Surcharge Offset |  | Ending Balance |  | Beginning Balance |  | Revenue Increase (Reduction) |  | Refunds (Collections) |  | Surcharge Offset |  | Ending Balance
Memorandum accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 WCMA* | $ | — |  |  | 112 |  |  | (112 | ) |  | — |  |  | — |  |  | $ | 2,944 |  |  | — |  |  | (517 | ) |  | — |  |  | 2,427 |
2015 WCMA* | 1,589 |  |  | (71 | ) |  | (1,120 | ) |  | — |  |  | 398 |  |  | 5,372 |  |  | (20 | ) |  | — |  |  | — |  |  | 5,352 |
2016 WCMA | — |  |  | 1,407 |  |  | — |  |  | (1,407 | ) |  | — |  |  | — |  |  | 3,014 |  |  | — |  |  | (3,014 | ) |  | — |
2017 WCMA | — |  |  | 2,060 |  |  | — |  |  | (2,060 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
All others | 2,768 |  |  | 671 |  |  | 241 |  |  | — |  |  | 3,680 |  |  | 594 |  |  | 517 |  |  | (1 | ) |  | — |  |  | 1,110 |
Total memorandum accounts | 4,357 |  |  | 4,179 |  |  | (991 | ) |  | (3,467 | ) |  | 4,078 |  |  | 8,910 |  |  | 3,511 |  |  | (518 | ) |  | (3,014 | ) |  | 8,889 |
Balancing accounts, net assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water supply costs | 5,190 |  |  | 197 |  |  | 297 |  |  | — |  |  | 5,684 |  |  | 2,771 |  |  | (313 | ) |  | (22 | ) |  | — |  |  | 2,436 |
Drought surcharges | (7,688 | ) |  | — |  |  | (833 | ) |  | 3,467 |  |  | (5,054 | ) |  | (359 | ) |  | — |  |  | (3,167 | ) |  | 3,014 |  |  | (512 | )
Pension | (2,009 | ) |  | 173 |  |  | (703 | ) |  | — |  |  | (2,539 | ) |  | (552 | ) |  | 280 |  |  | (155 | ) |  | — |  |  | (427 | )
2012 General Rate Case true-up | 20,682 |  |  | — |  |  | (2,258 | ) |  | — |  |  | 18,424 |  |  | 33,070 |  |  | — |  |  | (2,498 | ) |  | — |  |  | 30,572 |
2015 General Rate Case true-up | 5,528 |  |  | — |  |  | (1,431 | ) |  | — |  |  | 4,097 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
All others | (151 | ) |  | (214 | ) |  | (334 | ) |  | 76 |  |  | (623 | ) |  | 1,366 |  |  | (130 | ) |  | (11 | ) |  | — |  |  | 1,225 |
Total balancing accounts | $ | 21,552 |  |  | 156 |  |  | (5,262 | ) |  | 3,543 |  |  | 19,989 |  |  | $ | 36,296 |  |  | (163 | ) |  | (5,853 | ) |  | 3,014 |  |  | 33,294 |
Total | $ | 25,909 |  |  | 4,335 |  |  | (6,253 | ) |  | 76 |  |  | 24,067 |  |  | $ | 45,206 |  |  | 3,348 |  |  | (6,371 | ) |  | — |  |  | 42,183 |
* As of March 31, 2017, the reserve balance for the 2014 WCMA and 2015 WCMA was $978 and $2,183, respectively, which has been netted from the balances above.

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