Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail)

v3.20.4
Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Balance at January 1 $ 2,461 $ 428
Additions 563 2,033
Balance at December 31 $ 3,024 $ 2,461