Property and Equipment, net (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 45,241	$ 30,882
Less: Accumulated depreciation	(20,242)	(16,338)
Property and equipment, net	24,999	14,544
Equipment, tooling and molds
Property, Plant and Equipment [Line Items]
Total property and equipment	30,740	21,118
Computer software and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,945	2,153
Furniture, fixtures and other
Property, Plant and Equipment [Line Items]
Total property and equipment	1,809	1,739
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	5,656	5,597
Construction in process
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 4,091	$ 275