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Note 6 - Accrued Expenses and Other Long-term Liabilities - Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Compensation and related taxes $ 8,550 $ 7,973  
Income and other taxes 1,003 2,927  
Professional fees 40 43  
Deferred revenue 552
Other 4,421 4,352  
Total $ 14,014 $ 15,847