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Segment Information (Details 2) - Customer concentration risk - Revenue	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Customer A
Concentration risk
Revenue from major customer as a percentage of total revenue	23.00%	12.00%	21.00%	13.00%
Customer B
Concentration risk
Revenue from major customer as a percentage of total revenue	15.00%		10.00%
Customer C
Concentration risk
Revenue from major customer as a percentage of total revenue	11.00%	18.00%	11.00%	16.00%

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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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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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