Summary of Significant Accounting Policies - Inventory and Property and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accounting Policies [Abstract]
CARES Act, cash benefits	$ 6,400,000
Inventory write-down	$ 24,200,000	$ 0
Minimum
Property, Plant and Equipment [Abstract]
Property and equipment, useful life	2 years
Maximum
Property, Plant and Equipment [Abstract]
Property and equipment, useful life	39 years