Note 4 - Inventory (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30, 2018		December 31, 2017
Raw materials and component parts	$	2,064,573	$	2,637,138
Work-in-process		1,419,666		523,644
Finished products		1,861,375		1,200,204
Total Inventory	$	5,345,614		4,360,986
Less: inventory reserves		203,092		457,505
Net Inventory	$	5,142,522	$	3,903,481