Joint Venture	9 Months Ended
Sep. 30, 2014
Joint Ventures Disclosure [Abstract]
Joint Ventures Disclosure [Text Block]	12. Joint Venture On February 19, 2013, the Company entered into a joint venture agreement (the “Joint Venture Agreement”) with Pirelli & C. Ambiente SpA (“Pirelli”) to form a joint venture entity, Eco Emission Enterprise Srl under the laws of Italy (the “Joint Venture”), through which the Company and Pirelli would jointly sell their emission control products in Europe and the Commonwealth of Independent States countries. The Joint Venture commenced operations in April 2013. On November 8, 2013, as a result of slower than anticipated progress in achieving sales objectives initially established for the Joint Venture, the Company and Pirelli agreed to voluntarily dissolve the Joint Venture in accordance with the Joint Venture Agreement. The Joint Venture ceased operations on November 30, 2013 and commenced liquidation on December 9, 2013. The dissolution was finalized in April 2014. The majority of the Company’s investment balance of $0.1 million, included in other assets in the accompanying unaudited condensed consolidated balance sheets December 31, 2013, was received in April 2014, with a small balance to be collected following the receipt of value added tax due from the Swedish and Italian governments. The Company has resumed its operations in Europe in a similar manner as conducted prior to the Joint Venture.

Joint Venture

9 Months Ended

Sep. 30, 2014

Joint Ventures Disclosure [Abstract]

12. Joint Venture

On February 19, 2013, the Company entered into a joint venture agreement (the “Joint Venture Agreement”) with Pirelli & C. Ambiente SpA (“Pirelli”) to form a joint venture entity, Eco Emission Enterprise Srl under the laws of Italy (the “Joint Venture”), through which the Company and Pirelli would jointly sell their emission control products in Europe and the Commonwealth of Independent States countries. The Joint Venture commenced operations in April 2013.

On November 8, 2013, as a result of slower than anticipated progress in achieving sales objectives initially established for the Joint Venture, the Company and Pirelli agreed to voluntarily dissolve the Joint Venture in accordance with the Joint Venture Agreement. The Joint Venture ceased operations on November 30, 2013 and commenced liquidation on December 9, 2013. The dissolution was finalized in April 2014. The majority of the Company’s investment balance of $0.1 million, included in other assets in the accompanying unaudited condensed consolidated balance sheets December 31, 2013, was received in April 2014, with a small balance to be collected following the receipt of value added tax due from the Swedish and Italian governments. The Company has resumed its operations in Europe in a similar manner as conducted prior to the Joint Venture.