Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 44,388		$ 44,388		$ 47,751
Less: accumulated depreciation and amortization	(39,191)		(39,191)		(40,878)
Total property and equipment, net	5,197		5,197		6,873
Depreciation and amortization	724	$ 714	2,195	$ 2,127
Machinery
Property, Plant and Equipment [Line Items]
Property and equipment, gross	18,900		$ 18,900		21,333
Machinery | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives			3 years
Machinery | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives			15 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	769		$ 769		1,209
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives			3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives			15 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,265		$ 21,265		21,333
Computer, network equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,469		$ 2,469		2,999
Computer, network equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives			3 years
Computer, network equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives			7 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 985		$ 985		$ 877