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Stock-Based Compensation - Secondary Stock Sales Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2021 | Jun. 30, 2021 | May 31, 2021 | Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Sale of stock, consideration received on transaction | $ 1,400,000,000 |  |  |  |  |  |
Share-based payment arrangement, expense |  |  |  | $ 21,393,000 | $ 1,588,000 | $ 34,830,000 | $ 5,239,000
Private Placement |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) | 1,428,568 |  |  |  |  |  |
Private Placement | Common Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  | 305,724 | 85,403 |  |  |  |
Sale of stock, price per share (in USD per share) |  |  | $ 23.00 |  |  |  |
Sale of stock, consideration received on transaction |  | $ 8,700,000 | $ 2,000,000 |  |  |  |
Share-based payment arrangement, expense |  |  |  | $ 0 |  |  |
Private Placement | Common Stock | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) |  | $ 21.00 |  |  |  |  |
Private Placement | Common Stock | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) |  | $ 52.00 |  |  |  |  |

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