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Marketable Securities | 9 Months Ended
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Sep. 30, 2020
Investments Debt And Equity Securities [Abstract] |
Marketable Securities | NOTE 7-MARKETABLE SECURITIES The following table summarizes the Company’s marketable securities as of September 30, 2020 (in thousands):
|  | Amortized Cost Basis |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US government |  | $ | 42,204 |  |  | $ | 347 |  |  | $ | — |  |  | $ | 42,551 |
Corporate bonds |  |  | 36,939 |  |  |  | 141 |  |  |  | — |  |  |  | 37,080 |
Commercial paper |  |  | 19,692 |  |  |  | 4 |  |  |  | — |  |  |  | 19,696 |
Money market funds(1) |  |  | 3,288 |  |  |  | — |  |  |  | — |  |  |  | 3,288 |
Certificates of deposit |  |  | 1,631 |  |  |  | — |  |  |  | — |  |  |  | 1,631 |
|  | $ | 103,754 |  |  | $ | 492 |  |  | $ | — |  |  | $ | 104,246 |
(1) | Included within cash and cash equivalents on the condensed consolidated balance sheets.
The Company classifies its marketable securities as available-for-sale and they consist of all debt securities. The amortized cost basis as of September 30, 2020 includes $0.3 million of accrued interest receivable. As of September 30, 2020, marketable securities were in a net unrealized gain position of $0.5 million. Unrealized gains and losses on available-for-sale debt securities are included as a component of comprehensive loss. As of September 30, 2020, the Company did not hold any marketable securities in an unrealized loss position. Per the Company’s general investment strategy, the Company does not intend to sell the investments before maturity. As of September 30, 2020, the Company believes the cost basis for its marketable securities were recoverable in all material aspects and no credit impairments were recognized in the period. The Company’s marketable securities as of September 30, 2020 mature at various dates through February 2022. The fair values of marketable securities by contractual maturity consist of the following (in thousands):
|  | September 30, 2020 |  |  | December 31, 2019 |
Maturities within one year |  | $ | 98,346 |  |  | $ | 114,386 |
Maturities after one year through three years |  |  | 5,900 |  |  |  | 48,556 |
|  | $ | 104,246 |  |  | $ | 162,942 |

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