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Income Taxes (Details) - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 06, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax expense |  | $ 3.3 | $ 0.9 |
Income tax provision, interim tax |  |  | 1.1 |
Deferred tax benefit |  | 0.1 | (5.4) |
Deferred tax liability |  | 4.2 |  | $ 4.1
Reduced deferred tax asset carryforward |  | 58.7 | 58.7 |
Domestic Tax Authority |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards |  |  |  | 179.2
Operating loss carryforwards, US |  |  |  | $ 119.2
Domestic Tax Authority | Various Nonconsolidated Subsidiaries |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards |  | 138.0 |  |
Net operating loss, not subject to expiration |  | 101.9 |  |
Net operating losses subject to expiration |  | 36.1 |  |
Domestic Tax Authority | R2 Technologies |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards |  | 92.9 |  |
Domestic Tax Authority | DTV America |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards |  | 42.7 |  |
Domestic Tax Authority | Other Entities |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards |  | $ 2.4 |  |
HMN |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Current foreign tax expense (benefit) | $ 4.4 |  | 4.4 |
Deferred tax benefit |  |  | (5.5) |
Deferred tax liability |  |  | $ 11.3 |
Ownership percentage sold | 19.00% |  |  |

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