Commitments and Contingencies - Additional Information (Details)		3 Months Ended
	Dec. 04, 2019 ft²	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Jan. 01, 2019
Loss Contingencies [Line Items]
Remaining operating lease term		1 year 4 months 24 days
Rent expense		$ 300,000	$ 300,000
Payments related to operating lease		400,000	$ 300,000
Liability in connection with lawsuit		0
Alphatec Spine, Inc.
Loss Contingencies [Line Items]
Guaranteed obligated minimum royalty payments through 2024 and beyond		$ 5,100,000
Minimum
Loss Contingencies [Line Items]
Operating lease term		1 year
Maximum
Loss Contingencies [Line Items]
Operating lease term		5 years 6 months
Building lease
Loss Contingencies [Line Items]
Area for facility of office, engineering and research and development space | ft²	121,541
Lease agreement commencement date	Nov. 15, 2020
Lease agreement expiry date	Nov. 30, 2030
Operating lease discount rate				10.50%