Note 4 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2022			2021
Buildings	$	493,000		$	493,000
Machinery and equipment		14,948,000			15,273,000
Office furniture and equipment		2,393,000			2,177,000
Leasehold improvements		606,000			553,000
Software		3,000			3,000
		18,443,000			18,499,000
Less accumulated depreciation and amortization		(12,701,000	)		(12,435,000	)
Total net property and equipment	$	5,742,000		$	6,064,000