Note 6 - Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	June 30,		December 31,
	2016		2015
Raw materials	$	5,019,000	$	6,456,000
Work in process		3,044,000		4,143,000
Finished goods		4,593,000		5,799,000
	$	12,656,000	$	16,398,000