Leases - Additional Information (Detail)		3 Months Ended		6 Months Ended
	Mar. 08, 2022 USD ($) ft² Tranche	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) ft² Lease Tranche	Jun. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Disclosure Of Leases [Line Items]
Lease liabilities		$ 5,127,000		$ 5,127,000			$ 2,505,000
ROU assets		$ 4,787,000		$ 4,787,000			$ 2,252,000
Operating lease weighted average remaining lease term		5 years 7 months 6 days		5 years 7 months 6 days
Operating lease weighted average discount rate		5.50%		5.50%
Operating lease expense		$ 288,000	$ 213,000	$ 518,000	$ 427,000
Variable lease cost		3,000	9,000	6,000	18,000
Operating lease payments		238,000	221,000	480,000	442,000
Finance lease, amortization expense of ROU asset		34,000	30,000	68,000	62,000
Interest expense on finance lease liability		4,000	4,000	8,000	10,000
Finance lease, operating cash flows		4,000	4,000	8,000	10,000
Finance lease, financing cash flows		$ 34,000	$ 29,000	$ 67,000	$ 58,000
Finance lease, weighted average Remaining term		9 months 18 days		9 months 18 days
Finance lease, weighted average discount rate, percent		12.50%		12.50%
Caladrius [Member]
Disclosure Of Leases [Line Items]
Additional subleased property office area | ft²				1,381
Basking Ridge Office Space [Member]
Disclosure Of Leases [Line Items]
Number of renewal options | Tranche				2
Laboratory Equipment [Member]
Disclosure Of Leases [Line Items]
Number of finance leases | Lease				2
First Lab Equipment [Member]
Disclosure Of Leases [Line Items]
Lease expiration month year				2022-12
Second Lab Equipment [Member]
Disclosure Of Leases [Line Items]
Lease expiration month year				2023-06
Revision of Prior Period, Error Correction, Adjustment [Member]
Disclosure Of Leases [Line Items]
Lease liabilities						$ 2,900,000
ROU assets						$ 2,900,000
Massachusetts [Member] | Maximum [Member]
Disclosure Of Leases [Line Items]
Construction allowance		$ 670,750		$ 670,750
Massachusetts [Member] | Original Lease [Member]
Disclosure Of Leases [Line Items]
Area of leased office and laboratory space | ft²				13,650
Original lease term		5 years		5 years
Lease expiration month year				2019-04
Massachusetts [Member] | Second Amendment Lease [Member]
Disclosure Of Leases [Line Items]
Lease commencement date				Sep. 10, 2018
Lease term expiration date				May 31, 2025
Additional Space leased | ft²				6,590
Irrevocable standby letter of credit		$ 150,000		$ 150,000
Massachusetts [Member] | Third Amendment Lease [Member]
Disclosure Of Leases [Line Items]
Area of leased office and laboratory space | ft²				1,409
Lease commencement date				Jul. 01, 2021
Lease term expiration date				May 31, 2025
Massachusetts [Member] | Fourth Amendment Lease [Member]
Disclosure Of Leases [Line Items]
Area of leased office and laboratory space | ft²	13,650
Lease term expiration date	May 31, 2028
Termination of property area | ft²	7,999
Lease existence of option to extend				true
Number of renewal options | Tranche	1
Additional lease renewal option period	5 years
Massachusetts [Member] | Fourth Amendment Lease [Member] | New Premises [Member]
Disclosure Of Leases [Line Items]
Additional Space leased | ft²	11,999
Percentage of cost of any change-orders bear by company				100.00%
Massachusetts [Member] | Fourth Amendment Lease [Member] | Maximum [Member]
Disclosure Of Leases [Line Items]
Construction allowance	$ 555,960
NEW JERSEY | Basking Ridge Office Space [Member]
Disclosure Of Leases [Line Items]
Lease expiration month year				2022-06
Area of leased office space | ft²				3,000
Lease inception month year				2017-07
Additional lease renewal option period		5 years		5 years
Lease renewal rate at 95% of market rent at time of renewal				95.00%