Note 6 - Inventories

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Inventory Disclosure [Text Block]

6. Inventories

As of

March 31, 2020

and

December 31, 2019,

inventories consisted of the following:

	March 31,		December 31,
	2020		2019
Raw materials	$	4,855,000	$	4,284,000
Work in process		2,890,000		2,559,000
Finished goods		3,403,000		4,460,000
	$	11,148,000	$	11,303,000