Commitments and Contingencies - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended
	Aug. 31, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Lease liability			$ 567,000
Operating lease right-of-use asset			549,000		$ 640,000
Operating Lease Expense			104,000	$ 71,000
Lease liability noncurrent			175,000		$ 278,000
Cash paid for operating lease liability			$ 105,000	$ 99,000
Operating lease weighted average discount rate						8.00%
Operating lease weighted average remaining lease term			1 year 4 months 24 days
Option to extend the lease		option for an additional year
Noncancelable operating lease agreement [Member] | Amended Operating Lease [Member]
Loss Contingencies [Line Items]
Lease liability		$ 667,000
Operating lease right-of-use asset		$ 667,000
Description of Lease Term		August 2023
Percentage of increase in monthly base rent		4.00%
Additional noncancelable operating lease agreement [Member] | New Operating Lease [Member]
Loss Contingencies [Line Items]
Lease liability	$ 439,000
Operating lease right-of-use asset	$ 439,000
Description of Lease Term	August 2020 through August 2023
Lease extended termination description	option to terminate the lease prior to its expiration with at least one month’s prior written notice and a one-time payment equal to four months’ rent.
Option to extend the lease	option for an additional year
Maximum [Member] | Noncancelable operating lease agreement [Member] | Amended Operating Lease [Member]
Loss Contingencies [Line Items]
Operating Leases Rent Expense		$ 21,444
Maximum [Member] | Additional noncancelable operating lease agreement [Member] | New Operating Lease [Member]
Loss Contingencies [Line Items]
Lease rental rate per month	$ 14,033
Percentage of increase in monthly base rent	9.00%
Minimum [Member] | Noncancelable operating lease agreement [Member] | Amended Operating Lease [Member]
Loss Contingencies [Line Items]
Operating Leases Rent Expense		$ 20,019
Minimum [Member] | Additional noncancelable operating lease agreement [Member] | New Operating Lease [Member]
Loss Contingencies [Line Items]
Lease rental rate per month	$ 12,462
Percentage of increase in monthly base rent	4.00%