Note 6 - Inventories

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

6. Inventories

As of

March 31, 2019

and

December 31, 2018,

inventories consisted of the following:

	March 31,		December 31,
	2019		2018
Raw materials	$	4,784,000	$	4,732,000
Work in process		1,144,000		825,000
Finished goods		4,479,000		4,321,000
	$	10,407,000	$	9,878,000