Annual report pursuant to Section 13 and 15(d)

Note 12 - Employee Retirement Programs (Details Textual)

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Note 12 - Employee Retirement Programs (Details Textual) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 3.5 $ 3.4 $ 3.3
Other Postretirement Benefits Cost (Reversal of Cost) $ 1.0 $ 3.6 $ 3.7