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Investments
6 Months Ended
Jun. 30, 2020
Investments  
Investments

5. Investments

As of June 30, 2020, our short-term investments consisted of U.S. Treasury securities, maturing at various dates through November 2020, and certificates of deposit with various financial institutions maturing at various dates through February 2021. U.S. Treasury securities are classified as short-term investments on our interim and annual balance sheets and certificates of deposit are classified as short-term investments on our interim balance sheets. U.S Treasury securities and certificates of deposit are classified as available-for-sale and are recorded at fair value. The total fair value of our available-for-sale securities as of June 30, 2020 was $7.0 million.