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v3.21.1

Summary of Significant Accounting Policies - Significant Estimates Used by Management in Determining Fair Values of Customer Relationships Acquired (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items] |  |
Discount rates | 22.00% |
Customer attrition rates | 25.00% |
Minimum |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Discount rates |  | 19.00%
Customer attrition rates |  | 10.00%
Maximum |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Discount rates |  | 25.00%
Customer attrition rates |  | 43.00%
Weighted Average |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Discount rates |  | 20.00%
Customer attrition rates |  | 13.00%

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- Definition 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. + References No definition available. + Details
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