Subsequent Event - Additional Information (Details) - Subsequent Event - Arctic Vision Limited $ in Millions	Mar. 10, 2020 USD ($)
Subsequent Event [Line Items]
Amount of upfront payment and development milestones payment to be received under license agreement	$ 35.5
Upfront payment	4.0
Maximum
Subsequent Event [Line Items]
Development milestone payments	$ 31.5
Threshold percentage of sales for tiered royalties	12.00%
Minimum [Member]
Subsequent Event [Line Items]
Threshold percentage of sales for tiered royalties	10.00%