Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.21.2
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Lessor, Lease, Description [Line Items]    
Total future estimated lease liability $ 4,300  
Average annual sublease income 179 $ 131
Arithmetic Average [Member]    
Lessor, Lease, Description [Line Items]    
Average annual sublease income $ 300