Basis of Presentation and Summary of Significant Accounting Policies (Schedule of Concentration Risk) (Details)		3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2019
Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		100.00%	100.00%
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	31.00%
Customer B | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		28.00%	30.00%
Customer B | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	10.00%
Customer C | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		25.00%	28.00%
Customer C | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	24.00%
Customer D [Member] | Net Product Sales
Concentration Risk [Line Items]
Concentration of credit risk		15.00%	10.00%
Customer D [Member] | Accounts Receivable
Concentration Risk [Line Items]
Concentration of credit risk	35.00%