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Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2021
Accounting Policies [Abstract] |
Schedule of Fair Value And Amortized Cost of Marketable Securities | The fair value and amortized cost of marketable securities by major security type as of March 31, 2021 is as follows:
|  | As of March 31, 2021 |
(in thousands) |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Money market funds |  | $ | 86,794 |  |  | $ | — |  |  | $ | — |  |  | $ | 86,794 |
Non-U.S. government securities |  |  | 11,269 |  |  |  | — |  |  |  | (4 | ) |  |  | 11,265 |
Corporate debt securities |  |  | 40,675 |  |  |  | — |  |  |  | (35 | ) |  |  | 40,640 |
Asset-backed securities |  |  | 13,398 |  |  |  | — |  |  |  | (4 | ) |  |  | 13,394 |
Commercial paper |  |  | 31,453 |  |  |  | — |  |  |  | — |  |  |  | 31,453 |
Total |  | $ | 183,589 |  |  | $ | — |  |  | $ | (43 | ) |  | $ | 183,546 |
Classified as: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 86,794 |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 96,752 |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 183,546 |
Reconciliation of Cash, Cash Equivalents and Restricted Cash | The reconciliation of cash, cash equivalents and restricted cash reported within the applicable balance sheet line items that sum to the total of the same such amount shown in the consolidated statements of cash flows is as follows:
|  | March 31, |
(in thousands) |  | 2021 |  |  | 2020 |
Cash and cash equivalents |  | $ | 98,829 |  |  | $ | 11,696 |
Restricted cash, non-current |  |  | — |  |  |  | 48 |
Total cash, cash equivalents and restricted cash |  | $ | 98,829 |  |  | $ | 11,744 |
Schedule of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities included the following:
(in thousands) |  | March 31, 2021 |  |  | December 31, 2020 |
Research and development costs |  | $ | 2,195 |  |  | $ | 2,800 |
Refundable contract liability |  |  | 836 |  |  |  | 836 |
Compensation and benefit costs |  |  | 499 |  |  |  | 1,492 |
Accrued professional fees |  |  | 514 |  |  |  | 2,185 |
Accrued development milestone |  |  | — |  |  |  | 1,531 |
Other |  |  | 83 |  |  |  | 162 |
Total accrued expenses and other current liabilities |  | $ | 4,127 |  |  | $ | 9,006 |

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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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