Incremental Costs to Obtain a Contract with a Customer (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Commission and incentive payments
Capitalized Contract Cost [Line Items]
Total deferred costs	$ 65,659		$ 65,659		$ 70,707
Commission and incentive payments | Deferred costs included in prepaid and other current assets
Capitalized Contract Cost [Line Items]
Total deferred costs	41,017		41,017		45,009
Commission and incentive payments | Deferred costs included in other assets
Capitalized Contract Cost [Line Items]
Total deferred costs	24,642		24,642		$ 25,698
Deferred commissions
Capitalized Contract Cost [Line Items]
Amortization expense	$ 14,800	$ 10,900	$ 45,000	$ 32,500