Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefit, including related estimates of penalties and interest	$ 0	$ 0
Income tax provision (benefit)	$ 60,000	$ (19,000)
Projected annual effective tax rate	0.90%	0.20%
Statutory tax rate	21.00%