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Regulatory Matters - Schedule of Regulatory Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Regulatory matters: |  |
Total AWR | $ (15,492) | $ (22,796)
GSWC |  |
Regulatory matters: |  |
Total AWR | (15,139) | (24,082)
GSWC | Various refunds to customers |  |
Regulatory matters: |  |
Total AWR | (3,782) | (2,680)
GSWC | Water Revenue Adjustment Mechanism and Modified Cost Balancing Account |  |
Regulatory matters: |  |
Total AWR | 19,530 | 13,326
GSWC | Costs deferred for future recovery on Aerojet case |  |
Regulatory matters: |  |
Total AWR | 4,994 | 5,210
GSWC | Pension and other post-retirement obligations |  |
Regulatory matters: |  |
Total AWR | 24,975 | 25,212
GSWC | COVID-19 memorandum accounts |  |
Regulatory matters: |  |
Total AWR | 4,471 | 1,663
GSWC | Excess deferred income taxes |  |
Regulatory matters: |  |
Total AWR | (72,765) | (73,000)
GSWC | Flow-through taxes, net |  |
Regulatory matters: |  |
Total AWR | (5,075) | (5,552)
GSWC | Other regulatory assets |  |
Regulatory matters: |  |
Total AWR | 12,513 | 11,739
BVESI | Various refunds to customers |  |
Regulatory matters: |  |
Total AWR | (9,016) | (8,189)
BVESI | Other regulatory assets |  |
Regulatory matters: |  |
Total AWR | 15,683 | 13,916
BVESI | Derivative unrealized (gain) loss |  |
Regulatory matters: |  |
Total AWR | $ (7,020) | $ (4,441)

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