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Patents and Other Assets | 12 Months Ended
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Dec. 31, 2012
Patents and Other Assets [Text Block] | Note 6. Patents and Other Assets Patents represent legal fees and filing costs that are capitalized and amortized over their estimated useful lives of 17 to 20 years or their remaining legal lives, whichever is shorter, after they are placed in service. There were no patents placed in service for the years ended December 31, 2012 and 2011. In 2012, we capitalized approximately $0.1 million for patent filing costs, for a total investment in patents of approximately $0.6 million as of December 31, 2012. In 2011, we capitalized approximately $0.2 million for patent filing costs, for a total investment in patents of approximately $0.5 million at December 31, 2011. No amortization expense of patents was recorded in either of the years ended December 31, 2012 and 2011. These patents were not placed in service for the years ended December 31, 2012 and 2011, or in prior years. Security deposits of approximately $0.1 million at December 31, 2012 and 2011, represent the security deposit placed on the McLean, Virginia corporate offices. The security deposit at December 31, 2012, is reported under the caption prepaid expenses and other current assets.

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