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Balancing and Memorandum Account Recovery Procedures (Tables) | 3 Months Ended
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Mar. 31, 2016
Regulated Operations [Abstract] |
Public Utilities General Disclosures |
| Three months ended March 31, 2016 |  | Three months ended March 31, 2015
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* | $ | 2,944 |  |  | — |  |  | (517 | ) |  | — |  |  | 2,427 |  |  | $ | — |  |  | — |  |  | — |  |  | — |  |  | — |
2015 WCMA* | 5,372 |  |  | (20 | ) |  | — |  |  | — |  |  | 5,352 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
2016 WCMA | — |  |  | 3,014 |  |  | — |  |  | (3,014 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
All others | 594 |  |  | 517 |  |  | (1 | ) |  | — |  |  | 1,110 |  |  | (1,377 | ) |  | 423 |  |  | 165 |  |  | — |  |  | (789 | )
Total memorandum accounts | 8,910 |  |  | 3,511 |  |  | (518 | ) |  | (3,014 | ) |  | 8,889 |  |  | (1,377 | ) |  | 423 |  |  | 165 |  |  | — |  |  | (789 | )
Balancing accounts, net assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water supply costs | 2,771 |  |  | (313 | ) |  | (22 | ) |  | — |  |  | 2,436 |  |  | 890 |  |  | (12 | ) |  | (53 | ) |  | — |  |  | 825 |
Drought surcharges | (359 | ) |  | — |  |  | (3,167 | ) |  | 3,014 |  |  | (512 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Pension | (552 | ) |  | 280 |  |  | (155 | ) |  | — |  |  | (427 | ) |  | 1,412 |  |  | (606 | ) |  | (383 | ) |  | — |  |  | 423 |
2012 General Rate Case true-up | 33,070 |  |  | — |  |  | (2,498 | ) |  | — |  |  | 30,572 |  |  | 44,400 |  |  | 1,876 |  |  | (2,759 | ) |  | — |  |  | 43,517 |
All others | 1,366 |  |  | (130 | ) |  | (11 | ) |  | — |  |  | 1,225 |  |  | 1,736 |  |  | (114 | ) |  | (29 | ) |  | — |  |  | 1,593 |
Total balancing accounts | $ | 36,296 |  |  | (163 | ) |  | (5,853 | ) |  | 3,014 |  |  | 33,294 |  |  | $ | 48,438 |  |  | 1,144 |  |  | (3,224 | ) |  | — |  |  | 46,358 |
Total | $ | 45,206 |  |  | 3,348 |  |  | (6,371 | ) |  | — |  |  | 42,183 |  |  | $ | 47,061 |  |  | 1,567 |  |  | (3,059 | ) |  | — |  |  | 45,569 |
* As of March 31, 2016, the reserve balance for the 2014 WCMA and 2015 WCMA was $1,278 and $2,343, respectively, which has been netted from the balances above. There was no reserve recorded for the 2014 WCMA and 2015 WCMA at March 31, 2015.

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- Definition Tabular disclosure of regulation for public utility entities, including, but not limited to, rate requests, decommissioning costs and the amount of allowance for earnings on equity capitalized for rate making purposes. + References No definition available. + Details
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