Summary of Significant Accounting Policies Concentrations (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Licensee 1 [Member] | Revenue, Rights Granted [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	45.00%	54.00%
Licensee 1 [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	38.00%	100.00%
Licensee 2 [Member] | Revenue, Rights Granted [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	21.00%
Licensee 2 [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	36.00%
Licensee 3 [Member] | Revenue, Rights Granted [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	10.00%
Licensee 3 [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%
Licensee 4 [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%
Licensees in foreign jurisdictions [Member] | Revenue, Rights Granted [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	26.00%	39.00%