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Legal Proceedings - Narrative (Details) $ in Millions | Jun. 30, 2021 USD ($) | Mar. 12, 2021 USD ($) | Jan. 31, 2019 claim
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SDC Dispute |  |  |
Loss Contingencies [Line Items] |  |  |
Amount owed from other party |  | $ 43.4 |
2018 Securities Class Action Lawsuit |  |  |
Loss Contingencies [Line Items] |  |  |
Settlement amount | $ 16.0 |  |
Shareholder Derivative Lawsuit |  |  |
Loss Contingencies [Line Items] |  |  |
Number of lawsuits | claim |  |  | 3

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