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v3.21.1

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Property, Plant and Equipment [Line Items] |  |  |
Asset write-down | $ 1.9 | $ 2.1 |
Contingencies related to COVID-19 |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Percentage of workforce furloughed or subject to reduced compensation, COVID-19 |  |  | 9.00%
Reduction to revenue, rent concessions | $ 0.1 |  |

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