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Note 2 - Discontinued Operations - Operating Results for Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net sales		$ 9
Cost of sales		394
Gross loss		(385)
Selling, general and administrative expense
Operating loss		(385)
Interest expense
Loss before income taxes		(385)
Income tax benefit		(59)
Net loss		$ (326)

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