Commitments and Contingencies - Milestone Payments (Details) - USD ($) $ in Thousands	Oct. 10, 2019	Aug. 20, 2018
Milestone one
Other Commitments [Line Items]
Calendar Year Net Sales Threshold		$ 10,000
Milestone Payment		1,000
Milestone two
Other Commitments [Line Items]
Calendar Year Net Sales Threshold		20,000
Milestone Payment		1,000
Milestone three
Other Commitments [Line Items]
Calendar Year Net Sales Threshold		20,000
Milestone Payment		$ 1,500
Rhofade | Milestone one
Other Commitments [Line Items]
Calendar Year Net Sales Threshold	$ 50,000
Milestone Payment	5,000
Rhofade | Milestone two
Other Commitments [Line Items]
Calendar Year Net Sales Threshold	75,000
Milestone Payment	5,000
Rhofade | Milestone three
Other Commitments [Line Items]
Calendar Year Net Sales Threshold	100,000
Milestone Payment	$ 10,000