Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Goodwill [Line Items]
Number of reportable segments | segment	3
Valuation allowance	$ 24,132	$ 21,618
Provision for workers' compensation claims threshold	500
Advertising Expense	$ 37,200	$ 54,300	$ 52,500
Minimum
Goodwill [Line Items]
Amortized life assigned to identifiable intangible assets (in years)	2 years
Maximum
Goodwill [Line Items]
Amortized life assigned to identifiable intangible assets (in years)	5 years