Income Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate from continuing operations	(9.80%)	106.10%	3.50%	5.90%
Effective income tax rate reconciliation, at federal statutory income tax rate, percent			21.00%