Additions made to capitalized computer software costs during the period.

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Amount of expense for amortization of capitalized computer software costs.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Consolidated Financial Statement Components - Capitalized Software Development (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Capitalized software development costs, additions	$ 2,900,000	$ 0	$ 8,200,000	$ 0
Amortization expense	$ 400,000		$ 400,000		$ 0
Capitalized software
Property, Plant and Equipment [Line Items]
Useful life			3 years