Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Detail)

v3.21.2
Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member]
$ in Thousands
Sep. 30, 2021
USD ($)
Assets  
Total assets $ 23,557
Money market securities (cash equivalents) [Member]  
Assets  
Total assets 23,507
Restricted cash [Member]  
Assets  
Total assets 50
Level 1 [Member]  
Assets  
Total assets 23,557
Level 1 [Member] | Money market securities (cash equivalents) [Member]  
Assets  
Total assets 23,507
Level 1 [Member] | Restricted cash [Member]  
Assets  
Total assets $ 50