Post-effective amendment to a registration statement that is not immediately effective upon filing

Summary of Significant Accounting Policies - Summary of Changes in Warranty Provision (Parenthetical) (Detail)

v3.21.2
Summary of Significant Accounting Policies - Summary of Changes in Warranty Provision (Parenthetical) (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
 [1]
Product Warranty Liability [Line Items]        
Standard product warranty provision $ 161 $ 27 $ 61
Maximum [Member]        
Product Warranty Liability [Line Items]        
Standard product warranty provision   $ 1 $ 1  
[1] Represents amount lower than $1.