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Note 14 - Fair Values of Financial Instruments
3 Months Ended
Mar. 31, 2019
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
14.
FAIR VALUES OF FINANCIAL INSTRUMENTS      
 
Cash and cash equivalents, accounts receivable, inventory, due from factor, accounts payable and accrued liabilities are carried at, or approximate, fair value because of their short-term nature.