Restructuring and Severance - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses	$ 202,000	$ 817,000	$ 1,716,000
Net credit representing difference between amounts accrued and the settlement amount	151,000
3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses		817,000	1,716,000
Facility Rental | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses		521,000	1,341,000
Severance | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses		296,000	375,000
Severance
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses	$ 353,000
Impairment of ROU Operating Lease Asset | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses		$ 281,000	$ 1,296,000