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Marketable Securities | 6 Months Ended
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Jun. 30, 2022
Investments Debt And Equity Securities [Abstract] |
Marketable Securities |
3. | Marketable Securities
The fair value and amortized cost of available-for-sale marketable securities by major security type as of June 30, 2022 are presented in the following table (in thousands):
|  | June 30, 2022 |
Type of security |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
U.S. treasury securities |  | $ | 19,785 |  |  | $ | — |  |  | $ | (45 | ) |  | $ | 19,740 |
Corporate bonds |  |  | 15,485 |  |  |  | — |  |  |  | (90 | ) |  |  | 15,395 |
Commercial paper |  |  | 19,022 |  |  |  | — |  |  |  | — |  |  |  | 19,022 |
Total marketable securities |  | $ | 54,292 |  |  | $ | — |  |  | $ | (135 | ) |  | $ | 54,157 |
As of June 30, 2022, the remaining contractual maturities of available-for-sale marketable securities were as follows (in thousands):
|  | June 30, 2022 |
|  | Amortized Cost |  |  | Fair Value |
Due to mature: |  |  |  |  |  |  |  |
Less than one year |  | $ | 53,283 |  |  | $ | 53,157 |
One year through two years |  |  | 1,009 |  |  |  | 1,000 |
Total |  | $ | 54,292 |  |  | $ | 54,157 |
During the three and six months ended June 30, 2022, there have been no realized gains or losses on available-for-sale marketable securities, no marketable securities had been in a continuous unrealized loss position for more than 12 months, and the Company did not recognize any other-than-temporary impairment losses on these marketable securities.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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