Note 4 - Inventories

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Inventory Disclosure [Text Block]

4 . Inventories

Inventories consisted of the following:

	December 31,
	2016		2015
Raw materials	$	4,313,000	$	6,456,000
Work in process		2,535,000		4,143,000
Finished goods		4,146,000		5,799,000
	$	10,994,000	$	16,398,000