Summary of Significant Accounting Policies Concentration Risk (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Concentrations
Effective Income Tax Rate Reconciliation, Percent	1.00%	1.00%	2.00%	7.00%
Licensee 1 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	55.00%		55.00%		30.00%
Licensee 1 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	54.00%	43.00%	34.00%	29.00%
Licensee 2 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	16.00%		16.00%		17.00%
Licensee 2 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	15.00%	30.00%	23.00%	18.00%
Licensee 3 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	15.00%		15.00%		15.00%
Licensee 3 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	13.00%	12.00%		11.00%
Licensees in foreign jurisdictions [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	5.00%	20.00%	34.00%	49.00%