Software Development Costs, net (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Research and Development [Abstract]
Software development costs	$ 14.6	$ 23.5
Internal use software	0.8	0.9
Software costs amortized	20.0	16.4
Software costs written down to net realizable value	$ 0.0	$ 0.4
Weighted average amortization period	3 years 73 days	3 years

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Amount of expense for amortization of capitalized computer software costs.

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Amount of impairment loss from capitalized computer software costs.

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Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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