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Revenues from Contracts with Customers - Additional Information (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) Customer | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) Customer
Revenue From Contract With Customer [Line Items] |  |  |  |  |
Deferred revenue | $ 11.0 |  | $ 11.0 |  | $ 12.3
Revenue remaining performance obligation | 6.7 |  | 6.7 |  | $ 7.4
Revenue recognized | $ 1.5 | $ 0.4 | $ 6.3 | $ 2.1 |
Revenue practical expedient, incremental cost of obtaining contract [true/false] |  |  | true |  |
Customer Concentration Risk | Trade Accounts Receivable |  |  |  |  |
Revenue From Contract With Customer [Line Items] |  |  |  |  |
Number of customer | Customer |  |  | 1 |  | 1
Concentration risk, percentage |  |  | 10.00% |  | 10.00%

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