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Note 7 (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
LCD Monitor [Member]        
Net sales $ 0 $ 0 $ 0 $ 0
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax 0 0 0 88,000
Discontinued operations, net of income taxes 0 0 0 88,000
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax 0 0 0 88,000
Discontinued operations, net of income taxes $ 0 $ 0 $ 0 $ 88,000