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Note 4 - Management Actions - Reconciliation of Liability Balance of Severance and Related Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2020
Balance | $ 4.5 |  | $ 4.5 | $ 4.5
New charges |  | $ 3.1 | $ 2.0 | 6.2
Cash payments | (0.9) |  |  | (5.4)
Foreign currency adjustments | (0.1) |  |  | 0.2
Adjustments to accrual |  |  |  | (1.0)
Balance | $ 3.5 |  |  | $ 4.5

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