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Note 6 - Accrued Expenses and Other Long-Term Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accrued compensation and related benefits | $ 14.3 | $ 5.6 |
Various other liabilities | $ 11.5 | $ 2.8 |
Annual occupational disease benefits discount rate | 5.60% | 3.26% |
Uninsured claims | $ 3.6 | $ 3.9 |
Amount of occupational disease obligation | 1.5 | 1.4 |
Contributions to defined contribution plan | 2.3 | 1.2 | $ 0.9
Other long-term liabilities |  |  |
Uninsured claims | $ 2.7 | $ 2.4 |

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