Note 4 - Inventory (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30, 2020		December 31, 2019
Raw materials and component parts	$	3,038,993	$	2,945,427
Work-in-process		3,403,158		2,800,699
Finished products		4,037,811		2,183,170
Total inventory	$	10,479,962		7,929,296
Less: inventory reserves		250,939		250,606
Net inventory	$	10,229,023	$	7,678,690