Incremental Costs to Obtain a Contract with a Customer (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Capitalized contract cost	$ 10,800	$ 6,500
Commission and incentive payments
Capitalized Contract Cost [Line Items]
Total deferred costs	66,024		$ 70,707
Commission and incentive payments | Deferred costs included in prepaid and other current assets
Capitalized Contract Cost [Line Items]
Total deferred costs	43,044		45,009
Commission and incentive payments | Deferred costs included in other assets
Capitalized Contract Cost [Line Items]
Total deferred costs	22,980		$ 25,698
Deferred commissions
Capitalized Contract Cost [Line Items]
Amortization expense	$ 14,100	$ 10,800