Description of Business and Summary of Significant Accounting Policies - Schedule of Adjustments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of services	$ 408,043	$ 439,742	$ 581,293
Sales and marketing	357,813	315,195	431,815
General and administrative	153,902	177,574	196,543
Impairment charges	3,611	24,911	5,670
Depreciation and amortization	$ 105,473	146,523	206,270
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of services		366,696	476,355
Sales and marketing		263,006	352,740
General and administrative		156,286	174,286
Impairment charges		24,911	5,670
Depreciation and amortization		146,523	206,270
Revision of Prior Period, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of services		73,046	104,938
Sales and marketing		52,189	79,075
General and administrative		21,288	22,257
Impairment charges		0	0
Depreciation and amortization		$ (146,523)	$ (206,270)