Property and Equipment, net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 175,207	$ 160,125
Less: accumulated depreciation and amortization	(79,022)	(72,724)
Property and equipment, net	$ 96,185	87,401
Surgical instruments
Property Plant And Equipment [Line Items]
Surgical instruments	4 years
Property and equipment, gross	$ 140,585	130,432
Machinery and equipment
Property Plant And Equipment [Line Items]
Surgical instruments	7 years
Property and equipment, gross	$ 11,135	11,092
Computer equipment
Property Plant And Equipment [Line Items]
Surgical instruments	3 years
Property and equipment, gross	$ 5,796	5,694
Office furniture and equipment
Property Plant And Equipment [Line Items]
Surgical instruments	5 years
Property and equipment, gross	$ 3,880	3,861
Leasehold improvements
Property Plant And Equipment [Line Items]
Leasehold improvements	various
Property and equipment, gross	$ 1,748	1,754
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 12,063	$ 7,292

Various useful life of property and equipment.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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