General form of registration statement for all companies including face-amount certificate companies

Income Taxes - Summary of Income (Loss) Before Provision (Benefit) (Detail)

v3.21.2
Income Taxes - Summary of Income (Loss) Before Provision (Benefit) (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]            
United States         $ (25,283) $ (27,728)
Foreign         (15,236) (8,656)
Loss before income taxes $ (8,218) $ (7,166) $ (20,102) $ (24,850) $ (40,519) $ (36,384)