Note 5 - Property and Equipment (Details) - Property and Equipment (USD $)	Dec. 31, 2013	Dec. 31, 2012
Property and Equipment [Abstract]0
Buildings	$ 355,000	$ 355,000
Machinery and equipment	9,706,000	9,462,000
Office furniture and equipment	1,005,000	962,000
Leasehold improvements	454,000	441,000
	11,520,000	11,220,000
Less accumulated depreciation and amortization	(8,452,000)	(7,801,000)
	$ 3,068,000	$ 3,419,000