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v3.21.2

Debt and Credit Arrangements - Fair Value Disclosures about Debt (Details) | Sep. 30, 2021 | Dec. 31, 2020
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Convertible Debt | Convertible Notes, due 2024 |  |
Debt Instrument |  |
Debt instrument percentage over par value | 333.00% | 210.00%

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- Definition Debt Instrument Fair Value Percentage Over Par Value + References No definition available. + Details
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- Details
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- Details
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