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Note 20 - Subsequent Event	3 Months Ended
Note 20 - Subsequent Event	Mar. 31, 2019
Notes to Financial Statements
Subsequent Events [Text Block]	20. SUBSEQUENT EVENT In April 2019, the Company closed on a previously announced two -year revolving line of credit facility of up to $10.0 million with Bank of America Merrill Lynch. The new facility replaces the Company’s existing $5.0 million U.S.-based revolver and UK-based overdraft facilities with more favorable terms (see Note 15 ).