Note 5 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Property and Equipment Carrying Value [Table Text Block]

	December 31,
	2015			2014
Buildings	$	355,000		$	355,000
Machinery and equipment		10,515,000			10,622,000
Office furniture and equipment		1,074,000			1,027,000
Leasehold improvements		497,000			463,000
		12,441,000			12,467,000
Less accumulated depreciation and amortization		(9,534,000	)		(9,152,000	)
	$	2,907,000		$	3,315,000