Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.21.2
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Liability for unrecognized tax benefit, including related estimates of penalties and interest $ 0   $ 0  
Income tax provision (benefit) $ (14,000) $ (15,000) $ 7,000 $ (49,000)
Projected annual effective tax rate 0.40% 55.60% 0.10% 0.50%
Statutory tax rate     21.00%