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Note 5 - Long-term Debt, Net - Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Long-term debt $ 46,507 $ 40,576
Less: Current portion of long-term debt (5,000) (7,293)
Long-term debt, net (non-current) 41,507 33,283
Refinanced Term Loan [Member]    
Long-term debt 0 39,350
The Credit Agreement [Member] | New Credit Facility Term Loan [Member]    
Long-term debt 46,507 0
Promissory Notes [Member]    
Long-term debt $ 0 $ 1,226