Commitments and Contingencies - Additional Information (Details)		12 Months Ended
	Dec. 04, 2019 USD ($) ft²	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) ft²	Jan. 01, 2019
Loss Contingencies [Line Items]
Lease interest rate		6.40%
Capital lease commitment outstanding		$ 100,000	$ 100,000
Remaining operating lease term		1 year 8 months 12 days
Rent expense		$ 1,300,000	1,400,000
Cash payments related to operating lease		1,400,000	$ 1,400,000
Liability in connection with lawsuit		0
Alphatec Spine, Inc.
Loss Contingencies [Line Items]
Guaranteed obligated minimum royalty payments through 2022 and beyond		$ 5,400,000
Maximum
Loss Contingencies [Line Items]
Operating lease term		5 years 6 months
Minimum
Loss Contingencies [Line Items]
Operating lease term		1 year
Building lease
Loss Contingencies [Line Items]
Area for facility of office, engineering and research and development space | ft²	121,541		76,000
Lease agreement expiry date	Nov. 30, 2030		Jul. 31, 2021
Lease agreement commencement date	Nov. 15, 2020
Lease renewal term	260 months
Annual increase in base rent	3.00%
Operating lease discount rate				10.50%
First year | Building lease
Loss Contingencies [Line Items]
Lease rent payable per month			$ 111,000
Each year thereafter | Building lease
Loss Contingencies [Line Items]
Lease rent payable increase per month			$ 3,000
First year | Building lease
Loss Contingencies [Line Items]
Lease base rent payment per month	$ 195,000
First year | Building lease | Maximum
Loss Contingencies [Line Items]
Abatement period	10 years
First year | Building lease | Minimum
Loss Contingencies [Line Items]
Abatement period	2 years
Second year | Building lease
Loss Contingencies [Line Items]
Lease base rent payment per month	$ 244,115