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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		6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized			$ 0.2	$ 0.1	$ 3.9	$ 1.6
Amortization of capitalized commission costs			3.0	$ 2.6	6.0	$ 5.1
Unbilled receivable	$ 18.0	$ 11.6	$ 18.0		$ 18.0
Sales Revenue \| Customer Concentration Risk \| Largest Two Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage			26.00%	21.00%	25.00%	21.00%
Accounts Receivable \| Customer Concentration Risk \| Largest Two Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	26.00%
Accounts Receivable \| Customer Concentration Risk \| Largest Customer
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		15.00%