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Note 7 - Summary of Discontinued Operations (Details) - Scenario, Unspecified [Domain] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
LCD Monitor [Member]
Net sales	$ 0	$ 6,197,000	$ 0	$ 11,583,000
Earnings from discontinued operations	14,000	279,000	88,000	361,000
Discontinued operations, net of income taxes	14,000	279,000	88,000	361,000
Earnings from discontinued operations	14,000	279,000	88,000	361,000
Discontinued operations, net of income taxes	$ 14,000	$ 279,000	$ 88,000	$ 361,000

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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