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Debt - Long-term Debt (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 206.4 | $ 207.0
Less: unamortized debt issuance costs for Term Loan and Series Notes | 0.2 | 0.2
Total debt | 206.2 | 206.8
Less: current portion of long-term debt | 133.4 | 134.0
Long-term debt, net | $ 72.8 | 72.8
Term Loan, due December 31, 2024 (6.28%) |  |
Debt Instrument [Line Items] |  |
Debt instrument, stated interest rate | 6.28% |
Long-term debt, gross | $ 80.4 | 81.0
Less: current portion of long-term debt | $ 80.4 |
Series B notes, due July 5, 2024 (3.82%) |  |
Debt Instrument [Line Items] |  |
Debt instrument, stated interest rate | 3.82% |
Long-term debt, gross | $ 53.0 | 53.0
Series C notes, due July 5, 2027 (4.02%) |  |
Debt Instrument [Line Items] |  |
Debt instrument, stated interest rate | 4.02% |
Long-term debt, gross | $ 73.0 | $ 73.0

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