Note 7 (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 12, 2014
LCD Monitor [Member] | Reduction of Bad Debt Accrual [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax			$ 60,000
LCD Monitor [Member] | Reduction in General Accruals [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax			38,000
LCD Monitor [Member] | Additional Union Pension Settlement Expense [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax			(10,000)
LCD Monitor [Member]
Disposal Group, Including Discontinued Operation, Consideration					$ 7,200,000
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	$ 0	$ (1,450,000)	88,000	$ (1,089,000)
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	$ 0	$ (1,450,000)	$ 88,000	$ (1,089,000)