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Commitments, Contingencies and Other Items (Details) $ in Thousands | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2021 USD ($) lawsuit | Feb. 28, 2017 USD ($) lawsuit | Sep. 30, 2023 USD ($) patent | Dec. 31, 2020 USD ($)
Loss Contingencies |  |  |  |  |
Estimate of possible loss |  |  |  | $ 85,000 |
Patents allegedly infringed | patent |  |  |  | 1 |
Unfavorable Regulatory Action |  |  |  |  |
Loss Contingencies |  |  |  |  |
Estimate of possible loss |  |  |  | $ 300 |
Penalties Sought for Violation of Regulations And Laws of WUTC |  |  |  |  |
Loss Contingencies |  |  |  |  |
Damages awarded | $ 1,000 |  |  |  |
Penalties for Violation of Washington Regulations and Laws Filed by Staff of WUTC |  |  |  |  |
Loss Contingencies |  |  |  |  |
Damages sought, value |  |  |  |  | $ 7,000
Penalties Sought by Washington Attorney's General Office |  |  |  |  |
Loss Contingencies |  |  |  |  |
Damages sought, value |  |  |  |  | $ 27,000
Judicial Ruling | Missouri Municipalities |  |  |  |  |
Loss Contingencies |  |  |  |  |
Number of pending lawsuits | lawsuit |  | 1 | 1 |  |
Litigation settlement amount |  |  | $ 4,000 |  |
Judicial Ruling | Columbia and Joplin Municipalities |  |  |  |  |
Loss Contingencies |  |  |  |  |
Litigation settlement amount |  | $ 55,000 |  |  |

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