Note 9 - Sale of Bioplastics Manufacturing Business	3 Months Ended
Mar. 31, 2013
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	Note 9. Sale of Bioplastics Manufacturing Business. On February 8, 2013, the Company sold its bioplastics manufacturing business through a sale of all of the assets included in its other segment, including all of the Company’s assets at its bioplastics manufacturing facility in Onaga, Kansas and certain assets of the Company’s extruder bio-resin laboratory located in Atchison, Kansas. These net assets had a net book value of $1,344. The sales price totaled $2,800 and resulted in a gain, net of $47 of taxes, of $1,406 that was recognized as a gain on sale of discontinued operations in the quarter ended March 31, 2013. The remaining income statement activity for the quarters ended March 31, 2013 and 2012 are not presented as discontinued operations due to immateriality relative to the consolidated financial statements as a whole.

Note 9 - Sale of Bioplastics Manufacturing Business

3 Months Ended

Mar. 31, 2013

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

Note 9. Sale of Bioplastics Manufacturing Business.

On February 8, 2013, the Company sold its bioplastics manufacturing business through a sale of all of the assets included in its other segment, including all of the Company’s assets at its bioplastics manufacturing facility in Onaga, Kansas and certain assets of the Company’s extruder bio-resin laboratory located in Atchison, Kansas. These net assets had a net book value of $1,344. The sales price totaled $2,800 and resulted in a gain, net of $47 of taxes, of $1,406 that was recognized as a gain on sale of discontinued operations in the quarter ended March 31, 2013. The remaining income statement activity for the quarters ended March 31, 2013 and 2012 are not presented as discontinued operations due to immateriality relative to the consolidated financial statements as a whole.