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Note 3 - Assets Held for Sale (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current	$ 6,075		$ 6,075
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ (200)	$ (900)	$ (2,900)	$ (500)

Amount before tax of income (loss) from a discontinued operation. 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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