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Note 12 - Credit Agreements - Short-term Borrowings (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Short-term borrowings $ 57,031 $ 45,583
ABL Revolving Credit Facility [Member]    
Short-term borrowings 26,405 18,459
Other Lines of Credit [Member]    
Short-term borrowings $ 30,626 $ 27,124