Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Schedule of Marketable Securities (Detail)

v3.21.1
Marketable Securities - Schedule of Marketable Securities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]    
Marketable Securities, Amortized Cost $ 21,963  
Marketable Securities, Unrealized Gains 1  
Marketable Securities, Unrealized Losses (30)  
Marketable Securities, Fair Value 21,934  
Corporate Debt [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Marketable Securities, Amortized Cost 20,932 $ 27,026
Marketable Securities, Unrealized Gains 1 6
Marketable Securities, Unrealized Losses (29) (27)
Marketable Securities, Fair Value 20,904 $ 27,005
Corporate Debt [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Marketable Securities, Amortized Cost 1,031  
Marketable Securities, Unrealized Losses (1)  
Marketable Securities, Fair Value $ 1,030