Quarterly report pursuant to Section 13 or 15(d)

Condensed Financial Statements - Summary of Statements of Certain Statements of Cash Flows Amounts (Detail)

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Condensed Financial Statements - Summary of Statements of Certain Statements of Cash Flows Amounts (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]        
Cash and cash equivalents $ 7,385 $ 84,231 $ 58,610  
Restricted cash 1,433 1,501    
Total cash, cash equivalents, and restricted cash: 8,818 85,732 $ 60,038 $ 95,288
Short-term investments 38,620      
Total cash, cash equivalents, restricted cash, and short-term investments: 47,438 85,732    
Interest paid $ 367 $ 365