Summary of Significant Accounting Policies Concentration Risk (Details)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Concentrations
Effective Income Tax Rate Reconciliation, Percent	2.00%	1.00%
Licensee 1 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	48.00%		72.00%
Licensee 1 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	22.00%	58.00%
Licensee 2 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	22.00%		21.00%
Licensee 2 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	19.00%	15.00%
Licensee 3 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	15.00%
Licensee 3 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	16.00%
Licensee 4 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	11.00%
Licensees in foreign jurisdictions [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	25.00%	62.00%