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Joint Venture | 3 Months Ended
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Mar. 31, 2016
Joint Venture [Abstract] |
Joint Venture Disclosure [Text Block] | NOTE 5 - Joint Venture As previously reported in our Form 8-K filed with the SEC on July 6, 2015, we entered into an Operating Agreement and Statement of Work with Arete Innovative Solutions LLC (“Arete”). The Operating Agreement and Statement of Work govern the operations of Arete-Sigma LLC (the "Joint Venture"), a joint venture formed by us and Arete for the purpose of pursuing business opportunities related to AM utilizing our EOS M290 or like machines, including enabling and implementing sales and manufacturing transactions. Under the Operating Agreement and Statement of Work, among other matters reported in our Form 8-K and set forth in the Operating Agreement and Statement of Work, (i) each of Sigma and Arete hold a 50% ownership interest in the Joint Venture, and (ii) the Joint Venture is managed by William F. Herman, President of Arete, subject to certain limitations. Based on the Operating Agreement, the Company holds the non-controlling interest in the Joint Venture. Therefore, the Joint Venture has not been consolidated, but rather is accounted for on the equity method of recording investments. During the three months ended March 31, 2016, the joint venture had no activity. The Company is evaluating whether to continue the Joint Venture and is continuing to pursue business opportunities related to AM utilizing the Company's EOS M290 or like machines.

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- Definition Disclosure of joint venture or partnership that is included in the enterprise's financial statements using the proportionate consolidation method of accounting. + References No definition available. + Details
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