Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Financial Instruments Disclosure [Abstract]        
Cash and cash equivalents $ 151,097 $ 200,404    
Restricted cash - short-term 194 194    
Restricted cash - long-term 1,200 1,200    
Total cash, cash equivalents and restricted cash $ 152,491 $ 201,798 $ 71,597 $ 75,711