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v3.22.4

Long-Term Debt (Details) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
May 24, 2021 | Dec. 31, 2022 | Jan. 13, 2023 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |  |
Ratio of Indebtedness to EBITDA |  | 8 |  |
GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Ratio of Indebtedness to Net Capital |  | 0.4568 |  |
Ratio of Indebtedness to EBITDA |  | 4.2 |  |
Maximum borrowing capacity |  | $ 130,000,000 |  |
GSWC | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Ratio of Indebtedness to Net Capital |  | 0.6667 |  |
BVESI |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  | $ 35,000,000 |  |
Notes Payable 9.56 Percent Due 2031 | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 28,000,000 |  |  |
Interest rate (as a percent) | 9.56% |  |  |
Debt Instrument, Redemption Price, Percentage | 3.00% |  |  |
Redemption Price Of Debt Instrument | $ 840,000 |  |  |
5.87% notes due 2028 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 5.87% |  | 5.87%
5.87% notes due 2028 | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 5.87% |  | 5.87%
3.45% notes due 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 3.45% |  | 3.45%
3.45% notes due 2029 | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 3.45% |  | 3.45%
Private Placement Notes | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument Redemption Premium above Treasury Yield |  | 50.00% |  |
2.17% notes due 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 2.17% |  | 2.17%
2.17% notes due 2030 | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 2.17% |  | 2.17%
2.90% notes due 2040 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 2.90% |  | 2.90%
2.90% notes due 2040 | GSWC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as a percent) |  | 2.90% |  | 2.90%
Series A Senior Notes 5.12 Percent Due 2033 | GSWC | Subsequent Event |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount |  |  | $ 100,000,000 |
Interest rate (as a percent) |  |  | 5.12% |
Series A Senior Notes 5.22 Percent Due 2038 | GSWC | Subsequent Event |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount |  |  | $ 30,000,000 |
Interest rate (as a percent) |  |  | 5.22% |

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