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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

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Revenue Recognition - Narrative (Details) - segment	3 Months Ended		9 Months Ended
Revenue Recognition - Narrative (Details) - segment	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Number of reportable segments			1
Number of Operating Segments			1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, expected time of satisfaction, period	12 months		12 months
Revenue, remaining performance obligation, percentage	95.00%		95.00%
Revenue, remaining performance obligation, expected time of satisfaction, period	12 months		12 months
Revenue from Contract with Customer, Product and Service Benchmark \| Revenue Timing Of Transfer Of Goods Or Service \| Transferred over Time
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	91.00%	93.00%	92.00%	92.00%
Revenue from Contract with Customer, Product and Service Benchmark \| Revenue Timing Of Transfer Of Goods Or Service \| Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	9.00%	7.00%	8.00%	8.00%