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Significant Customers - Concentration Risk by Risk Factor of Sales Revenue and Accounts Receivable (Details) - Customer Concentration Risk - Customer A	12 Months Ended
	Dec. 31, 2020	[1]	Dec. 31, 2019
Sales Revenue, Net
Significant customers
Concentration risk, percentage			10.70%
Accounts Receivable
Significant customers
Concentration risk, percentage			14.80%
[1] Sales and accounts receivable from Customer A in 2020did not exceed 10% of revenue and total gross accounts receivable.

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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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