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v3.22.2

Summary of Significant Accounting Policies - Liquidity Matters (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2021 | Apr. 30, 2020 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Policies |  |  |  |  |  |  |  |
Net (loss) income |  |  | $ (145,151) | $ (116,026) | $ (283,746) | $ (179,879) |  |
Accumulated deficit |  |  | 1,678,582 |  | 1,678,582 |  | $ 1,394,836 |
Cash, cash equivalents and restricted cash |  |  | 91,384 | $ 63,039 | 91,384 | $ 63,039 | 84,614 | $ 48,855
Marketable securities |  |  | 547,353 |  | 547,353 |  | 829,896 |
Short-term Credit Line, outstanding balance |  |  | $ 50,086 |  | $ 50,086 |  | $ 50,052 |
Common stock, shares issued |  |  | 96,903,000 |  | 96,903,000 |  | 95,140,000 |
Convertible Notes |  |  |  |  |  |  |  |
Policies |  |  |  |  |  |  |  |
Outstanding principal balance |  | $ 287,500 | $ 287,500 |  | $ 287,500 |  |  |
Per annum interest rate (as a percent) |  | 2.25% |  |  | 2.25% |  |  |
Net proceeds |  | $ 278,300 |  |  |  |  |  |
Equity offering |  |  |  |  |  |  |  |
Policies |  |  |  |  |  |  |  |
Common stock, shares issued | 5,175,000 |  |  |  |  |  |  |
Stock issued (in dollars per share) | $ 113 |  |  |  |  |  |  |
Payment of offering expenses | $ 400 |  |  |  |  |  |  |
Proceeds from issuance of common stock | $ 551,200 |  |  |  |  |  |  |

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