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v3.22.2.2

Nature of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 11 Months Ended | 14 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 01, 2022 | Jul. 12, 2022 | May 01, 2022 | Jun. 11, 2021 | Jul. 31, 2022 | Jul. 31, 2022 | Apr. 30, 2022 | Jul. 31, 2021 | Jan. 31, 2021 | Jul. 31, 2022 | Apr. 30, 2022 | Jul. 31, 2022 | Oct. 31, 2021
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents, unrestricted |  |  |  |  | $ 456,479 | $ 456,479 |  |  |  | $ 456,479 |  | $ 456,479 | $ 432,213
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period shares new issues |  |  |  |  |  | 7,814,115 | 19,896,904 | 43,978,999 | 25,000,000 |  |  |  |
Common Stock | 2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC |  |  |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Average sale price per share |  |  |  |  | $ 3.63 |  |  |  |  |  |  |  |
Stock issued during period shares new issues | 10,700,000 |  |  |  | 18,500,000 |  |  |  |  | 7,800,000 |  |  |
Payments of commissions | $ 800 |  |  |  |  |  |  |  |  | $ 700 |  |  |
Gross proceeds from issuance of common stock | 39,200 |  |  |  |  |  |  |  |  | 27,900 |  |  |
Net proceeds from issuance of common stock | $ 38,400 |  |  |  |  |  |  |  |  | $ 27,200 |  |  |
Common Stock | 2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate number of shares to be offered |  | 95,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Stock issued during period shares new issues |  | 95,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Common Stock | 2021 Open Market Sale Agreement | Agents |  |  |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |
Average sale price per share |  |  |  |  |  |  |  |  |  |  |  | $ 7.79 |
Stock issued during period shares new issues |  | 0 | 0 |  |  |  |  |  |  |  | 64,000,000.0 | 64,000,000.0 |
Payments of commissions |  |  |  |  |  |  |  |  |  |  | $ 10,000 | $ 10,000 |
Gross proceeds from issuance of common stock |  |  |  |  |  |  |  |  |  |  | 498,100 | 498,100 |
Net proceeds from issuance of common stock |  |  |  |  |  |  |  |  |  |  | $ 488,100 | $ 488,100 |
Common Stock | 2021 Open Market Sale Agreement | Agents | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |

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