Note 5 - Inventories, Net (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31, 2017		December 31, 2016
Raw materials	$	2,506,867	$	3,062,830
Work-in-process		209,554		159,482
Finished goods		26,977		64,227
Totals	$	2,743,398	$	3,286,539