Note 5 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2020			2019
Buildings	$	493,000		$	493,000
Machinery and equipment		13,039,000			12,227,000
Office furniture and equipment		2,076,000			1,390,000
Leasehold improvements		517,000			508,000
Software		3,000			438,000
		16,128,000			15,056,000
Less accumulated depreciation and amortization		(11,775,000	)		(11,113,000	)
Total net property and equipment	$	4,353,000		$	3,943,000