Note 5 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2017			2016
Buildings	$	493,000		$	355,000
Machinery and equipment		11,036,000			10,661,000
Office furniture and equipment		1,151,000			1,092,000
Leasehold improvements		507,000			506,000
Software		177,000			-
		13,364,000			12,614,000
Less accumulated depreciation and amortization		(10,206,000	)		(9,968,000	)
	$	3,158,000		$	2,646,000