Note 2 - Discontinued Operations, Condensed Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Discontinued Operations, Disposed of by Sale [Member] \| Chem Free [Member]
Net sales		$ 2,725	$ 2,902	$ 5,289
Operating income (loss)		416	(3)	237
Net income before income taxes		$ 421	6	252
Income taxes			9	12
Net income (loss) from discontinued operations		$ 421	(3)	240
Net income (loss) from discontinued operations		$ 421	$ (3)	$ 240

Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount after tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until disposal.

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