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Note 14 - Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Foreign currency translation adjustments |  | $ | (19.1 | ) |  | $ | (36.3 | ) |  | $ | (31.9 | )
Pension and postretirement medical benefits |  |  | (1.7 | ) |  |  | (0.7 | ) |  |  | (0.3 | )
Cash flow hedge |  |  | 0.7 |  |  |  | (1.5 | ) |  |  | (5.0 | )
Total Accumulated Other Comprehensive Loss |  | $ | (20.1 | ) |  | $ | (38.5 | ) |  | $ | (37.2 | )
|  | Foreign Currency Translation Adjustments |  |  | Pension and Postretirement Medical Benefits |  |  | Cash Flow Hedge |  |  | Total |
December 31, 2019 |  | $ | (36.3 | ) |  | $ | (0.7 | ) |  | $ | (1.5 | ) |  | $ | (38.5 | )
Other comprehensive income (loss) before reclassifications |  |  | 17.2 |  |  |  | (1.0 | ) |  |  | (7.5 | ) |  |  | 8.7 |
Amounts reclassified from Accumulated Other Comprehensive Loss |  |  | — |  |  |  | — |  |  |  | 9.7 |  |  |  | 9.7 |
Net current period other comprehensive income (loss) |  |  | 17.2 |  |  |  | (1.0 | ) |  |  | 2.2 |  |  |  | 18.4 |
December 31, 2020 |  | $ | (19.1 | ) |  | $ | (1.7 | ) |  | $ | 0.7 |  |  | $ | (20.1 | )

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