Property and Equipment, net - Components of Property and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 14,534	$ 10,722
Less: Accumulated Depreciation	(6,142)	(5,069)
Property and equipment, net	8,392	5,653
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,143	7,055
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Capital Lease
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 201	201
Useful lives	5 years
Furniture
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 343	211
Furniture | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Furniture | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,806	2,732
Tooling
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,041	$ 523
Tooling | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	2 years
Tooling | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	3 years