Summary of Significant Accounting Policies Concentration Risk (Details)			3 Months Ended				3 Months Ended				3 Months Ended
	Mar. 31, 2013 Licensee 1 [Member]	Dec. 31, 2012 Licensee 1 [Member]	Mar. 31, 2013 Licensee 1 [Member] License Revenues [Member]	Mar. 31, 2012 Licensee 1 [Member] License Revenues [Member]	Mar. 31, 2013 Licensee 2 [Member]	Dec. 31, 2012 Licensee 2 [Member]	Mar. 31, 2013 Licensee 2 [Member] License Revenues [Member]	Mar. 31, 2012 Licensee 2 [Member] License Revenues [Member]	Mar. 31, 2013 Licensee 3 [Member]	Dec. 31, 2012 Licensee 3 [Member]	Mar. 31, 2013 Licensee 3 [Member] License Revenues [Member]	Mar. 31, 2012 Licensee 3 [Member] License Revenues [Member]	Mar. 31, 2013 Licensees in foreign jurisdictions [Member] License Revenues [Member]	Mar. 31, 2012 Licensees in foreign jurisdictions [Member] License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues			65.00%	54.00%			14.00%	20.00%			13.00%	18.00%	15.00%	74.00%
Concentration Risk, Percentage - Accounts Receivable	44.00%	34.00%			24.00%	30.00%			22.00%	25.00%