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Net Loss Per Share (Details) - $ / shares | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Apr. 08, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Warrants to purchase (in shares) | 500,000 |  | 500,000
Warrant, exercise price (in dollars per share) | $ 76.50 |  | $ 76.50
Stock options |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Anti-dilutive stock options outstanding (in shares) | 1,403,000 | 928,000 |
RSU Awards |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Anti-dilutive stock options outstanding (in shares) | 457,000 | 427,000 |
Convertible Debt Securities | Convertible Notes | Convertible Senior Notes due 2024 |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Anti-dilutive stock options outstanding (in shares) | 638,051 |  |
Initial conversion price (in dollars per share) | $ 46.4037 |  |
Convertible Debt Securities | Convertible Notes | Convertible Senior Notes Due 2026 |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Anti-dilutive stock options outstanding (in shares) | 3,700,272 |  |
Initial conversion price (in dollars per share) | $ 30.8356 |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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