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Convertible Notes - Summary of Interest Expenses Related to Convertible Notes (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Debt Disclosure [Abstract]    
Stated coupon interest $ 736 $ 736
Amortization of debt issuance cost 137 137
Total interest expense $ 873 $ 873