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Note 15 - Fair Values of Financial Instruments
3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
15.
FAIR VALUES OF FINANCIAL INSTRUMENTS      
 
Cash and cash equivalents, accounts receivable, due from factor, accounts payable and accrued liabilities are carried at, or approximate, fair value because of their short-term nature. The carrying values of the convertible debt and operating lease obligation approximated their fair values as of
March 31, 2020
and
December 31, 2019
as the interest rates approximated market.