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Derivatives (Narrative) (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 01, 2022 | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |
Net broker receivable |  | $ 1.8 | $ 3.4
Initial margin |  | 1.1 | 3.3
Increase in variation margin |  | 0.7 | $ 0.1
Derivatives, Fair Value [Line Items] |  |  |
Embedded derivative liability |  | $ 70.8 |
Forecast | Class A Convertible Preferred Stock Units |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Period to notify holders | 30 days |  |
Stock reset rate percentage | 10.75% |  |
Percentage below issue price per share | 110.00% |  |
LIBOR | Forecast | Class A Convertible Preferred Stock Units |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Basis spread on variable rate over stock price | 0.0750 |  |

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