Summary of Significant Accounting Policies Concentration Risk (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Concentrations
Effective Income Tax Rate Reconciliation, Percent	0.00%	(58.00%)	(2.00%)	56.00%
Licensee 1 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable	100.00%		100.00%		39.00%
Licensee 1 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	96.00%	60.00%	57.00%	30.00%
Licensee 2 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable					22.00%
Licensee 2 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues		27.00%	23.00%	27.00%
Licensee 3 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable					16.00%
Licensee 3 [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues			10.00%	13.00%
Licensee 4 [Member]
Concentrations
Concentration Risk, Percentage - Accounts Receivable					15.00%
Licensees in foreign jurisdictions [Member] | License Revenues [Member]
Concentrations
Concentration Risk, Percentage - Revenues	3.00%	93.00%	39.00%	78.00%