Revenues - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract liability	$ 23,769		$ 23,769		$ 24,958
Contract liability - long term	30,693		30,693		31,336
Revenue recognized that was included in unearned income	7,100	$ 4,000	15,400	$ 9,200
Transaction price allocated to performance obligations that are unsatisfied or partially satisfied	296,400		296,400
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Accounts receivable, net	$ 93,878		$ 93,878		$ 95,727
Professional Services, All Other Contracts | Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period of expected timing of satisfaction (in years)	2 years		2 years
Professional Services, All Other Contracts | Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period of expected timing of satisfaction (in years)	5 years		5 years