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Note 9 - Term Loans and Line of Credit Agreements - Summary of Term Loan and Line of Credit Agreements (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Long-term debt, gross $ 13,752  
Debt issuance costs (190)  
Long-term debt 13,562  
Less current portion of long-term debt, gross 733 $ 597
Less current portion debt issuance costs (24) (19)
Current portion of long-term debt 709 578
Long-term debt, gross, net of current portion 13,019 10,301
Debt issuance costs, net of current portion (166) (134)
Long-term debt, net of current portion 12,853 10,167
Term Loan Agreement [Member]    
Long-term debt, gross 10,752 10,898
Debt issuance costs (148) (153)
Long-term debt 10,604 $ 10,745
The 2019 Term Loan Agreement [Member]    
Long-term debt, gross 3,000  
Debt issuance costs (42)  
Long-term debt $ 2,958