Summary of Significant Accounting Policies - Property and equipment (Details)	12 Months Ended
	Dec. 31, 2021
Building leasehold improvements
Property, Plant and Equipment, Estimated Useful Lives	Shorter of lease term or useful life
Machinery and equipment
Estimated useful lives (in years)	5 years
Furniture, fixtures and IT equipment | Maximum
Estimated useful lives (in years)	5 years
Furniture, fixtures and IT equipment | Minimum [Member]
Estimated useful lives (in years)	3 years