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Regulatory Matters (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2005 | Jul. 31, 2005 | Dec. 31, 2020 | Dec. 31, 2019
Regulatory matters: |  |  |  |
Total |  |  | $ 16,539,000 | $ (2,450,000)
Regulatory Asset Not Accruing Carrying Costs |  |  | 19,800,000 |
Regulatory Asset CEMA |  |  | 4,400,000 |
Water Revenue Adjustment Mechanism [Member] |  |  |  |
Regulatory matters: |  |  |  |
Regulatory adjustment |  |  | 5,900,000 |
Pension Costs and Other Postretirement Benefit Costs |  |  |  |
Regulatory matters: |  |  |  |
Regulatory Asset Not Accruing Carrying Costs |  |  | 66,600,000 |
Flow-through taxes, net |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (10,400,000) |
Excess deferred income taxes |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (78,300,000) |
GSWC |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 12,373,000 | (2,450,000)
Regulatory Asset CEMA |  |  | 4,100,000 |
GSWC | Various refunds to customers |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (4,577,000) | (8,478,000)
GSWC | WRAM, net of MCBA |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 13,741,000 | 22,535,000
GSWC | Water Revenue Adjustment Mechanism [Member] |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (3,600,000) |
Deferred Revenues |  |  | 0 |
GSWC | Costs deferred for future recovery on Aerojet case |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 6,751,000 | 8,292,000
Regulatory Asset Recovery Periods |  | 20 years |  |
Increase in Revenue Requirement, Recoverable through Surcharges |  | $ 21,300,000 |  |
GSWC | Pension Costs and Other Postretirement Benefit Costs |  |  |  |
Regulatory matters: |  |  |  |
Regulatory Assets |  |  | 66,600,000 |
Total |  |  | 65,576,000 | 40,693,000
GSWC | Gain (Loss) on Derivative Instruments [Member] |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 0 | 3,171,000
GSWC | COVID-19 memorandum account |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 4,119,000 | 0
GSWC | Flow-through taxes, net |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (9,722,000) | (12,439,000)
GSWC | Excess deferred income taxes |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | (74,185,000) | (79,886,000)
GSWC | Other Regulatory Assets |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 10,670,000 | 23,662,000
Bear Valley Electric Service, Inc. |  |  |  |
Regulatory matters: |  |  |  |
Regulatory Asset CEMA |  |  | 295,000 |
Bear Valley Electric Service, Inc. | Gain (Loss) on Derivative Instruments [Member] |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | 1,537,000 | 0
Bear Valley Electric Service, Inc. | Other Regulatory Assets |  |  |  |
Regulatory matters: |  |  |  |
Total |  |  | $ 2,629,000 | $ 0
Maximum | GSWC | WRAM, net of MCBA |  |  |  |
Regulatory matters: |  |  |  |
Regulatory Asset Recovery Periods |  |  | 24 months |
Maximum | GSWC | Costs deferred for future recovery on Aerojet case |  |  |  |
Regulatory matters: |  |  |  |
Regulatory Asset Recovery Periods | 20 years |  |  |

X
- Definition Represents the amount of increase in revenue requirement for difference between the allocated general office costs authorized by the CPUC November 2010 Decision and what was then in rates for allocated general office costs. + References No definition available. + Details
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