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Note 6 - Long-term Debt - Interest on Borrowings (Details)
Sep. 30, 2020
Dec. 31, 2019
Senior Secured Term Loan B and Global ABL Facility [Member]    
Weighted average interest rate 4.79% 4.91%
Global ABL Facility [Member]    
Weighted average interest rate 2.71% 3.47%
Senior Secured Term Loan B [Member]    
Weighted average interest rate 4.92% 5.50%