Note 6 - Inventories

6 Months Ended

Jun. 30, 2017

Notes to Financial Statements

Inventory Disclosure [Text Block]

6. Inventories

As of

June 30, 2017

and

December 31, 2016,

inventories consisted of the following:

	June 30,		December 31,
	2017		2016
Raw materials	$	4,333,000	$	4,313,000
Work in process		2,869,000		2,535,000
Finished goods		3,566,000		4,146,000
	$	10,768,000	$	10,994,000