Note 6 - Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30,		December 31,
	2016		2015
Raw materials	$	4,630,000	$	6,456,000
Work in process		2,826,000		4,143,000
Finished goods		4,398,000		5,799,000
	$	11,854,000	$	16,398,000