Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail)

v3.21.2
Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Financial Instruments Disclosure [Abstract]        
Cash and cash equivalents $ 123,856 $ 200,404    
Restricted cash - short-term 194 194    
Restricted cash - long-term 1,200 1,200    
Total cash, cash equivalents and restricted cash $ 125,250 $ 201,798 $ 75,905 $ 75,711