Leases - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) facility lease	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) lease	Dec. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Non-cash lease expense | $	$ 139	$ 267
Number of leases entered | lease	0		1
Number of lease modified | lease			1
Number of leases exited | lease			2
Operating lease - right of use asset, net | $	$ 532		$ 659	$ 903
Total operating lease liabilities | $	$ 565		$ 728	$ 1,432
Los Angeles, California
Lessee, Lease, Description [Line Items]
Number of facilities	3
Number of facilities occupied	2
Dallas, Texas
Lessee, Lease, Description [Line Items]
Number of facilities	1
Austin, Texas
Lessee, Lease, Description [Line Items]
Number of facilities	1