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Concentration of Credit Risk (Tables)

3 Months Ended

Mar. 31, 2016

Risks and Uncertainties [Abstract]

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

Sales to these customers for the three months ended March 31, 2016 and 2015 are as follows:

		Three Months Ended						Three Months Ended
		March 31, 2016						March 31, 2015
Customer		Net Sales			% of Net Sales			Net Sales			% of Net Sales
Customer A		$	5,165,000			34.0	%	$	4,364,000			29.1	%
Customer B		$	2,340,000			15.4	%	$	1,851,000			12.4	%