Concentration of Credit Risk (Tables)

9 Months Ended

Sep. 30, 2016

Risks and Uncertainties [Abstract]

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

Sales to these customers for the three and nine months ended September 30, 2016 and 2015 are as follows:

	Three Months Ended					Three Months Ended
	September 30, 2016					September 30, 2015
			% of Net				% of Net
Customer	Net Sales		Sales		Net Sales		Sales
Customer A	$	3,088,000	22.9	%	$	3,256,000		21.9	%
Customer B	$	3,070,000	22.8	%	$	2,282,000		15.3	%

	Nine Months Ended					Nine Months Ended
	September 30, 2016					September 30, 2015
			% of Net					% of Net
Customer	Net Sales		Sales			Net Sales		Sales
Customer A	$	11,859,000		27.7	%	$	11,660,000		26.8	%
Customer B	$	7,870,000		18.4	%	$	6,091,000		14.0	%