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Hosting Arrangements (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]      
Hosting arrangements, Capitalized costs $ 8.4   $ 7.7
Hosting arrangements, Accumulated amortization 0.4   $ 0.3
Hosting arrangements, Amortization $ 0.1 $ 0.1