Note 4 - Inventories (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31,
	2023		2022
Raw materials	$	10,470,000	$	13,018,000
Work in process		2,236,000		2,225,000
Finished goods		7,425,000		9,154,000
Total inventory	$	20,131,000	$	24,397,000