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Summary of Significant Accounting Policies Concentration Risk (Details)
3 Months Ended 3 Months Ended
Mar. 31, 2014
Licensee 1 [Member]
Dec. 31, 2013
Licensee 1 [Member]
Mar. 31, 2014
Licensee 1 [Member]
License Revenues [Member]
Mar. 31, 2013
Licensee 1 [Member]
License Revenues [Member]
Mar. 31, 2014
Licensee 2 [Member]
Dec. 31, 2013
Licensee 2 [Member]
Mar. 31, 2013
Licensee 2 [Member]
License Revenues [Member]
Mar. 31, 2013
Licensee 3 [Member]
License Revenues [Member]
Mar. 31, 2014
Licensees in foreign jurisdictions [Member]
License Revenues [Member]
Mar. 31, 2013
Licensees in foreign jurisdictions [Member]
License Revenues [Member]
Concentrations                    
Concentration Risk, Percentage - Revenues     39.00% 65.00%     14.00% 13.00% 16.00% 15.00%
Concentration Risk, Percentage - Accounts Receivable 43.00% 60.00%     28.00% 22.00%