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Note 7 - Long-term Debt, Net - Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Long-term debt $ 52,987 $ 55,472
Less: Current portion of long-term debt (6,058) (3,500)
Long-term debt, net (non-current) 46,929 51,972
Refinanced Term Loan [Member]    
Long-term debt 50,612 55,472
Promissory Notes [Member]    
Long-term debt $ 2,375