Acquisition - Schedule of Intangible Assets Acquired (Details) - TRx	Nov. 17, 2017 USD ($)
Business Acquisition [Line Items]
Identifiable intangible assets	$ 18,068,000
PAI Sales & Marketing Agreement
Business Acquisition [Line Items]
Identifiable intangible assets	2,334,000
Metafolin \| Acquired product marketing rights
Business Acquisition [Line Items]
Identifiable intangible assets	10,465,000
Millipred \| Acquired product marketing rights
Business Acquisition [Line Items]
Identifiable intangible assets	4,714,000
Ulesfia \| Acquired product marketing rights
Business Acquisition [Line Items]
Identifiable intangible assets	$ 555,000