Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Debt and Other Financing Arrangements (Details Textual)

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Note 6 - Debt and Other Financing Arrangements (Details Textual) - Credit Agreement [Member] - USD ($)
$ in Millions
6 Months Ended
Dec. 31, 2020
Aug. 01, 2018
Long-term Debt, Total $ 231.8  
Term Loan [Member]    
Debt Instrument, Face Amount   $ 250.0
Revolving Credit Facility [Member]    
Line of Credit Facility, Maximum Borrowing Capacity   600.0
Line of Credit Facility, Additional Borrowing Capacity   $ 200.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.20%