Note 6 - Inventories, Net (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31, 201 8			December 31, 2017
Raw materials	$	3,060,291		$	2,632,415
Work in process		3,435,535			3,386,078
Finished goods		15,325,399			13,347,620
Allowance for excess quantities		(466,118	)		(500,181	)
Total inventories	$	21,355,107		$	18,865,932