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Note 5 - Long-term Debt, Net - Long-term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Long-term debt $ 48,329 $ 50,971
Less: Current portion of long-term debt (4,750) (6,873)
Long-term debt, net (non-current) 43,579 44,098
Refinanced Term Loan [Member]    
Long-term debt 45,904 48,571
Promissory Notes [Member]    
Long-term debt $ 2,425 $ 2,400