Summary of Significant Accounting Policies Concentration Risk (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Concentrations
Effective Income Tax Rate Reconciliation, Percent	17.00%	(13.00%)	14.00%	2.00%
Licensee 1 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	69.00%		69.00%		72.00%
Licensee 1 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	85.00%	74.00%	53.00%	40.00%
Licensee 2 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	17.00%		17.00%		21.00%
Licensee 2 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues				27.00%
Licensee 3 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	10.00%		10.00%
Licensees in foreign jurisdictions [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	85.00%	18.00%	63.00%	38.00%