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Fair Value Measurements - Transfers (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
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Fair Value Measurements, Valuation |  |
Amount of transfers of assets and liabilities measured on a recurring basis between Levels 1, 2 and 3 of the fair value hierarchy | $ 0 | $ 0
2.75% Convertible Senior Notes due 2027 |  |
Fair Value Measurements, Valuation |  |
Fair value of convertible senior notes | $ 341,800,000 | $ 442,200,000

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- Definition Amount of transfers of assets and liabilities measured on a recurring basis between Levels 1, 2 and 3 of the fair value hierarchy. + References No definition available. + Details
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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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- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Details
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