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Note 11 - Related Party Transactions	12 Months Ended
Note 11 - Related Party Transactions	Dec. 31, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 11 – Related Party Transactions During 2016 we leased our facility in Columbia, Maryland from an entity that is 50% owned by Gerard Gallagher, a director and our senior technical advisor. This lease was terminated in November 2016. Rents paid under this agreement were $253,000 during the year ended December 31, 2016. We have $945,000 principal outstanding at December 31, 2017 in promissory notes payable to MHW, net of remaining discount of $84,000. Per the terms of the notes, we paid interest of approximately $ 114,000 during each of the years ended December 31, 2017 and 2016, respectively. We have $650,000 principal outstanding at December 31, 2017 in promissory notes payable to MHW Partners, net of remaining discount of $88,000. Per the terms of the notes, we paid interest of approximately $36,000 during the year ended December 31, 2017. Peter H. Woodward, the Chairman of our Board of Directors, is a principal of MHW Capital Management, LLC which is the investment manager of MHW and MHW Partners. MHW Capital Management LLC is entitled to a performance-related fee tied to appreciation in the valuation of the common stock in excess of the applicable strike price under the warrant issued to MHW and MHW Partners. We have $300,000 in principal outstanding at December 31, 2017 in promissory notes payable to Mr. Glen Ikeda, a shareholder in the Company. The loan matures July 19, 2022 and bears no interest. We are permitted to make optional payments at any time without penalty. We issued Mr. Ikeda a warrant to purchase up to 954,231 shares of our common stock in connection with entering into the promissory notes.