Note 18 - Employee Retirement Programs (Details Textual) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 100.00% | ||
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 3.4 | $ 3.4 | $ 3.5 |
| Other Postretirement Benefits Cost (Reversal of Cost) | $ 0.7 | $ 0.1 | $ 1.0 |