Note 5 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2021			2020
Buildings	$	493,000		$	493,000
Machinery and equipment		15,273,000			13,039,000
Office furniture and equipment		2,177,000			2,076,000
Leasehold improvements		553,000			517,000
Software		3,000			3,000
		18,499,000			16,128,000
Less accumulated depreciation and amortization		(12,435,000	)		(11,775,000	)
Total net property and equipment	$	6,064,000		$	4,353,000