Basis of Presentation and Summary of Significant Accounting Policies (Schedule of Concentration Risk) (Details)		3 Months Ended	9 Months Ended
	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2019
Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		100.00%	96.00%
Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	100.00%
Customer A | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		32.00%	32.00%
Customer A | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	27.00%
Customer B | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		38.00%	34.00%
Customer B | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	35.00%
Customer C | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		30.00%	30.00%
Customer C | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	38.00%