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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Revenue and Contract Acquisition Costs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue recognized			$ 1.7	$ 1.1
Amortization of capitalized commission costs	$ 2.7	$ 2.3	7.8	$ 6.4
Unbilled receivable	$ 15.2		$ 15.2		$ 13.5
Sales Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	11.00%	11.00%	21.00%	11.00%
Accounts Receivable \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage			12.00%