Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member]
$ in Thousands
Mar. 31, 2020
USD ($)
Assets  
Total assets $ 12,206
Cash [Member]  
Assets  
Total assets 550
Money market securities (cash equivalents) [Member]  
Assets  
Total assets 11,606
Restricted cash [Member]  
Assets  
Total assets 50
Level 1 [Member]  
Assets  
Total assets 12,206
Level 1 [Member] | Cash [Member]  
Assets  
Total assets 550
Level 1 [Member] | Money market securities (cash equivalents) [Member]  
Assets  
Total assets 11,606
Level 1 [Member] | Restricted cash [Member]  
Assets  
Total assets $ 50