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Consolidated Financial Statements Details - Summary of Property Equipment and Improvements, Net (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Property Plant And Equipment [Abstract]    
Property and equipment $ 1,727 $ 2,365
Leasehold improvements 78 2,899
Property, equipment and improvements, gross 1,805 5,264
Less: accumulated depreciation (1,420) (2,910)
Property, equipment and improvements, net $ 385 $ 2,354