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Cash and Cash Equivalents and Marketable Securities | 6 Months Ended
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Jun. 30, 2021
Investments Debt And Equity Securities [Abstract] |
Cash and Cash Equivalents and Marketable Securities | 4. Cash and Cash Equivalents and Marketable Securities As of June 30, 2021 and December 31, 2020, cash and cash equivalents and marketable securities were comprised of the following:
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
As at June 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds included in cash and cash equivalents |  | $ | 2,818 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,818 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury notes |  |  | 7,160 |  |  |  | — |  |  |  | — |  |  |  | 7,160 |
Total |  | $ | 9,978 |  |  | $ | — |  |  | $ | — |  |  | $ | 9,978 |
As at December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds included in cash and cash equivalents |  | $ | 2,455 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,455 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury notes |  |  | 7,526 |  |  |  | — |  |  |  | — |  |  |  | 7,526 |
Total |  | $ | 9,981 |  |  | $ | — |  |  | $ | — |  |  | $ | 9,981 |
The amortized cost of marketable securities at June 30, 2021 is equal to their fair value. Accordingly, no unrealized gains or losses were recognized in the six months ended June 30, 2021. The maturities of the Company’s money market funds included in cash and cash equivalents, and marketable securities is less than one year.

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- Definition The entire disclosure of cash, cash equivalents, and debt and equity securities, including any unrealized or realized gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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- References No definition available. + Details
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