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Note 3 - Discontinued Operations - Operating Results for Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales				$ 9
Cost of sales		457		1,469
Gross loss		(457)		(1,460)
Selling, general and administrative expense		(1)		(1)
Operating loss		(456)		(1,459)
Interest expense
Loss before income taxes		(456)		(1,459)
Income tax expense (benefit)		26		(4)
Net loss		$ (482)		$ (1,455)

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