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v3.20.1

Regulatory Matters: (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Sep. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Mar. 31, 2018
Regulatory matters: |  |  |  |  |  |
Regulatory asset not accruing carrying costs | $ (42,700) |  |  |  |  |
Water Revenue Adjustment Mechanism and Modified Cost Balancing Account |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Increase (Decrease) in Other Regulatory Assets |  |  |  | $ 4,700 |  |
Pension and other post-retirement obligations |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory asset not accruing carrying costs | (42,900) |  |  |  |  |
GOLDEN STATE WATER COMPANY |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (1,867) |  |  |  | $ 2,450 |
GOLDEN STATE WATER COMPANY | Various refunds to customers |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | $ 7,319 |  |  |  | 8,478 |
GOLDEN STATE WATER COMPANY | Cost of Capital, Proceeding for Water Regions [Member] |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Return on Equity Percentage | 8.90% |  |  |  |  |
Weighted Cost of Capital Percent | 7.91% |  |  |  |  |
Extend filing term | 1 year |  |  |  |  |
GOLDEN STATE WATER COMPANY | Water Revenue Adjustment Mechanism and Modified Cost Balancing Account |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Amount billed to customers as surcharges |  | $ 2,200 | $ 2,800 |  |  |
Regulatory assets | $ (25,011) |  |  |  | (22,535) |
GOLDEN STATE WATER COMPANY | Costs deferred for future recovery on Aerojet case |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (8,097) |  |  |  | (8,292) |
GOLDEN STATE WATER COMPANY | Pension and other post-retirement obligations |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (40,170) |  |  |  | (40,693) |
GOLDEN STATE WATER COMPANY | Derivative [Member] |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory asset not accruing carrying costs | (4,300) |  |  |  |  |
GOLDEN STATE WATER COMPANY | Derivative unrealized loss |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (4,280) |  |  |  | (3,171) |
GOLDEN STATE WATER COMPANY | General Rate Case Memorandum Accounts |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (3,551) |  |  |  | (4,820) |
GOLDEN STATE WATER COMPANY | Deferred Income Tax Charge |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory asset not accruing carrying costs | (79,500) |  |  |  |  |
Regulatory assets | 79,522 |  |  |  | 79,886 |
GOLDEN STATE WATER COMPANY | Flow-through taxes, net |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory asset not accruing carrying costs | (12,200) |  |  |  |  |
Regulatory assets | 12,246 |  |  |  | 12,439 |
GOLDEN STATE WATER COMPANY | Other Regulatory Assets Net [Member] |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | (19,845) |  |  |  | $ (18,842) |
GOLDEN STATE WATER COMPANY | Water Revenue Adjustment Mechanism [Member] |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory assets | $ (11,200) |  |  |  |  |
Water Service Utility Operations [Member] |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Number of parties |  |  |  |  |  | 3
Maximum [Member] | GOLDEN STATE WATER COMPANY | Water Revenue Adjustment Mechanism and Modified Cost Balancing Account |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory Asset Recovery Periods |  |  |  | 24 months |  |
Minimum [Member] | GOLDEN STATE WATER COMPANY | Water Revenue Adjustment Mechanism and Modified Cost Balancing Account |  |  |  |  |  |
Regulatory matters: |  |  |  |  |  |
Regulatory Asset Recovery Periods |  |  |  | 12 months |  |

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