Leases - Schedule of Right of Use Asset and Related Lease Liability (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Right-of-use asset	$ 8,250	$ 8,622
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	gaia:RightOfUseLeaseAssetsNet
Operating lease liability (current)	$ 705	691
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable, accrued and other liabilities
Operating lease liability (non-current)	$ 7,596	7,952
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	gaia:LongTermLeaseLiability
Operating Lease, Liability	$ 8,301	$ 8,643