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Patent Sale (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended |
--- | --- | ---
Jun. 30, 2012 | Mar. 31, 2015
Patent Sale Narrative Details |  |
Sale of patents | $ 12.0 EGHT_SaleOfPatents |
Future maximum patent license collection | $ 3.0 EGHT_FutureMaximumPatentLicenseCollection | $ 1.0 EGHT_FutureMaximumPatentLicenseCollection

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