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Summary of Significant Accounting Policies and Basis of Presentation - Adoption of Accounting Pronouncement, Affected Line Items within the Statements of Cash Flows (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |  |  |
Non-cash operating lease expense |  | $ 551 | $ 78 |
Deferred rent |  |  | 0 |
Operating lease liabilities |  | 46 | (93) |
Net cash used in operating activities |  | (19,151) | (14,872) |
Supplemental disclosure of non-cash activities: |  |  |  |
Lease liability obtained in exchange for right-of-use assets |  | $ 6,855 | $ 7,823 |
As Previously Reported |  |  |  |
Cash flows from operating activities: |  |  |  |
Non-cash operating lease expense |  |  |  | $ 0
Deferred rent |  |  |  | (15)
Operating lease liabilities |  |  |  | 0
Net cash used in operating activities |  |  |  | (14,872)
Supplemental disclosure of non-cash activities: |  |  |  |
Lease liability obtained in exchange for right-of-use assets |  |  |  | $ 0
Adjustments |  |  |  |
Cash flows from operating activities: |  |  |  |
Non-cash operating lease expense | $ 78 |  |  |
Deferred rent | 15 |  |  |
Operating lease liabilities | (93) |  |  |
Net cash used in operating activities | 0 |  |  |
Supplemental disclosure of non-cash activities: |  |  |  |
Lease liability obtained in exchange for right-of-use assets | $ 7,823 |  |  |

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