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Balancing and Memorandum Account Recovery Procedures (Tables) | 9 Months Ended
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Sep. 30, 2015
Regulated Operations [Abstract] |
Public Utilities General Disclosures | San Jose Water Company has met the recognition requirements for certain of its balancing and memorandum accounts and, as such, amounts subject to balancing and memorandum accounts and revenue, regulatory assets and regulatory liability changed as follows:
| Three months ended September 30, 2015 |  | Three months ended September 30, 2014
Beginning Balance |  | Revenue Increase(Reduction) |  | Refunds (Collections) |  | Ending Balance |  | Beginning Balance |  | Revenue Increase(Reduction) |  | Refunds (Collections) |  | Ending Balance
Memorandum accounts | $ | (229 | ) |  | 301 |  |  | 150 |  |  | 222 |  |  | $ | (1,511 | ) |  | (154 | ) |  | 23 |  |  | (1,642 | )
Balancing accounts, net assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water supply costs | 1,070 |  |  | 2,153 |  |  | (32 | ) |  | 3,191 |  |  | (1,221 | ) |  | 2,477 |  |  | (17 | ) |  | 1,239 |
Pension | 140 |  |  | (231 | ) |  | (230 | ) |  | (321 | ) |  | 9,672 |  |  | (6,625 | ) |  | (123 | ) |  | 2,924 |
2012 General Rate Case true-up | 40,367 |  |  | — |  |  | (3,813 | ) |  | 36,554 |  |  | — |  |  | 46,456 |  |  | — |  |  | 46,456 |
All others | 1,453 |  |  | (88 | ) |  | (17 | ) |  | 1,348 |  |  | 1,858 |  |  | (81 | ) |  | (9 | ) |  | 1,768 |
Total balancing accounts | $ | 43,030 |  |  | 1,834 |  |  | (4,092 | ) |  | 40,772 |  |  | $ | 10,309 |  |  | 42,227 |  |  | (149 | ) |  | 52,387 |
Total balancing and memorandum accounts, net assets | $ | 42,801 |  |  | 2,135 |  |  | (3,942 | ) |  | 40,994 |  |  | $ | 8,798 |  |  | 42,073 |  |  | (126 | ) |  | 50,745 |
Balancing account, liability: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drought surcharges | 80 |  |  | — |  |  | 6,333 |  |  | 6,413 |  |  | — |  |  | — |  |  | — |  |  | — |
Total balancing account, liability | $ | 80 |  |  | — |  |  | 6,333 |  |  | 6,413 |  |  | $ | — |  |  | — |  |  | — |  |  | — |
| Nine months ended September 30, 2015 |  | Nine months ended September 30, 2014
Beginning Balance |  | Revenue Increase(Reduction) |  | Refunds (Collections) |  | Ending Balance |  | Beginning Balance |  | Revenue Increase(Reduction) |  | Refunds (Collections) |  | Ending Balance
Memorandum accounts | $ | (1,377 | ) |  | 1,122 |  |  | 477 |  |  | 222 |  |  | $ | (1,895 | ) |  | 230 |  |  | 23 |  |  | (1,642 | )
Balancing accounts, net assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water supply costs | 890 |  |  | 2,445 |  |  | (144 | ) |  | 3,191 |  |  | (2,378 | ) |  | 3,634 |  |  | (17 | ) |  | 1,239 |
Pension | 1,412 |  |  | (692 | ) |  | (1,041 | ) |  | (321 | ) |  | 9,734 |  |  | (6,687 | ) |  | (123 | ) |  | 2,924 |
2012 General Rate Case true-up | 44,400 |  |  | 1,937 |  |  | (9,783 | ) |  | 36,554 |  |  | — |  |  | 46,456 |  |  | — |  |  | 46,456 |
All others | 1,735 |  |  | (310 | ) |  | (77 | ) |  | 1,348 |  |  | 2,229 |  |  | (452 | ) |  | (9 | ) |  | 1,768 |
Total balancing accounts | $ | 48,437 |  |  | 3,380 |  |  | (11,045 | ) |  | 40,772 |  |  | $ | 9,585 |  |  | 42,951 |  |  | (149 | ) |  | 52,387 |
Total balancing and memorandum accounts, net assets | $ | 47,060 |  |  | 4,502 |  |  | (10,568 | ) |  | 40,994 |  |  | $ | 7,690 |  |  | 43,181 |  |  | (126 | ) |  | 50,745 |
Balancing account, liability: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drought surcharges | — |  |  | — |  |  | 6,413 |  |  | 6,413 |  |  | — |  |  | — |  |  | — |  |  | — |
Total balancing account, liability | $ | — |  |  | — |  |  | 6,413 |  |  | 6,413 |  |  | $ | — |  |  | — |  |  | — |  |  | — |

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