Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Lease interest rate	6.40%
Capital lease commitment outstanding	$ 100,000			$ 100,000
Remaining operating lease term	2 years 3 months 18 days
Rent expense	$ 300,000	$ 300,000
Cash payments related to operating lease	300,000
Liability in connection with lawsuit	0
Alphatec Spine, Inc.
Loss Contingencies [Line Items]
Guaranteed obligated minimum royalty payments through 2022 and beyond	$ 5,800,000
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]
Operating lease discount rate			10.50%