Note 5 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

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

	December 31,
	2014			2013
Buildings	$	355,000		$	355,000
Machinery and equipment		10,622,000			9,706,000
Office furniture and equipment		1,027,000			1,005,000
Leasehold improvements		463,000			454,000
		12,467,000			11,520,000
Less accumulated depreciation and amortization		(9,152,000	)		(8,452,000	)
	$	3,315,000		$	3,068,000