Note 6 - Inventories

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

6. Inventories

As of

June 30, 2018

and

December 31, 2017,

inventories consisted of the following:

	June 30,		December 31,
	2018		2017
Raw materials	$	3,967,000	$	4,567,000
Work in process		1,154,000		1,058,000
Finished goods		4,570,000		4,624,000
	$	9,691,000	$	10,249,000