Income Taxes - Additional Information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	8.70%	14.80%
Economic interest held in company by class of stock (in hundredths)	78.40%	77.40%
Unrecognized tax benefits	$ 8,800,000		$ 7,600,000
Interest related to unrecognized tax benefits	1,600,000		1,200,000
Penalty accruals	0		0
Deferred tax assets	28,600,000		29,800,000
Valuation allowance on deferred tax assets	$ 0		$ 0