Note 7 (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 12, 2014
LCD Monitor [Member] | Reduction in General Accruals [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	$ 14,000		$ 37,000
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] | 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	14,000	$ 279,000	88,000	$ 361,000
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	$ 14,000	$ 279,000	$ 88,000	$ 361,000