Summary of Significant Accounting Policies - Income Taxes, Inventory and Property and Equipment (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Income tax cash refunds	$ 2,700
CARES Act, cash benefits for the fiscal year 2019		$ 3,700
CARES Act, cash benefits for the fiscal year 2020		$ 6,800
Inventory write-down			$ 24,200
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