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Note 10 - Concentration of Credit Risk (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

		Three Months Ended								Three Months Ended
		March 31, 2021								March 31, 2020
Customer		Net Sales				% of Net Sales				Net Sales				% of Net Sales
Customer A		$	3,991,000				54	%		$	3,222,000				46	%

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- Definition

Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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