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Cash, Cash Equivalents and Short-Term Investments | 6 Months Ended
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Jun. 30, 2020
Cash And Cash Equivalents [Abstract] |
Cash, Cash Equivalents and Short-Term Investments | Note 4. Cash, Cash Equivalents and Short-Term Investments The following tables show the Company’s cash and cash equivalents and short-term investments by significant investment category as of June 30, 2020, and December 31, 2019 (in thousands):
|  | June 30, 2020 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Estimated fair value |  |  | Cash and cash equivalents |  |  | Short term investments |
Cash |  | $ | 3,747 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,747 |  |  | $ | 3,747 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  |  | 24,846 |  |  |  | — |  |  |  | — |  |  |  | 24,846 |  |  |  | 24,846 |  |  |  | — |
U.S. treasury securities |  |  | 2,067 |  |  |  | 5 |  |  |  | — |  |  |  | 2,072 |  |  |  | — |  |  |  | 2,072 |
Subtotal |  |  | 26,913 |  |  |  | 5 |  |  |  | — |  |  |  | 26,918 |  |  |  | 24,846 |  |  |  | 2,072 |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Corporate debt obligations |  |  | 2,182 |  |  |  | 7 |  |  |  | — |  |  |  | 2,189 |  |  |  | — |  |  |  | 2,189 |
Repurchase agreements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Asset-backed securities |  |  | 2,254 |  |  |  | 5 |  |  |  | — |  |  |  | 2,259 |  |  |  | — |  |  |  | 2,259 |
Subtotal |  |  | 4,436 |  |  |  | 12 |  |  |  | — |  |  |  | 4,448 |  |  |  | — |  |  |  | 4,448 |
Total |  | $ | 35,096 |  |  | $ | 17 |  |  | $ | - |  |  | $ | 35,113 |  |  | $ | 28,593 |  |  | $ | 6,520 |
|  | December 31, 2019 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Estimated fair value |  |  | Cash and cash equivalents |  |  | Short term investments |
Cash |  | $ | 3,950 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,950 |  |  | $ | 3,950 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  |  | 5,500 |  |  |  | — |  |  |  | — |  |  |  | 5,500 |  |  |  | 5,500 |  |  |  | — |
U.S. treasury securities |  |  | 3,078 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 3,079 |  |  |  | — |  |  |  | 3,079 |
Subtotal |  |  | 8,578 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 8,579 |  |  |  | 5,500 |  |  |  | 3,079 |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | 8,920 |  |  |  | — |  |  |  | — |  |  |  | 8,920 |  |  |  | 747 |  |  |  | 8,173 |
Corporate debt obligations |  |  | 5,922 |  |  |  | 5 |  |  |  | (1 | ) |  |  | 5,926 |  |  |  | — |  |  |  | 5,926 |
Repurchase agreements |  |  | 3,000 |  |  |  | — |  |  |  | — |  |  |  | 3,000 |  |  |  | 3,000 |  |  |  | — |
Asset-backed securities |  |  | 4,505 |  |  |  | 3 |  |  |  | — |  |  |  | 4,508 |  |  |  | — |  |  |  | 4,508 |
Subtotal |  |  | 22,347 |  |  |  | 8 |  |  |  | (1 | ) |  |  | 22,354 |  |  |  | 3,747 |  |  |  | 18,607 |
Total |  | $ | 34,875 |  |  | $ | 10 |  |  | $ | (2 | ) |  | $ | 34,883 |  |  | $ | 13,197 |  |  | $ | 21,686 |
The Company’s investments were primarily valued based upon one or more valuations reported by its investment accounting and reporting service provider. The investment service provider values the securities using a hierarchical security pricing model that relies primarily on valuations provided by a third-party pricing vendor. Such valuations may be based on trade prices in active markets for identical assets or liabilities (Level 1 inputs) or valuation models using inputs that are observable either directly or indirectly (Level 2 inputs), such as quoted prices for similar assets or liabilities, yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures. The Company performs certain procedures to corroborate the fair value of its holdings, including comparing valuations obtained from its investment service provider with other pricing sources to validate the reasonableness of the valuations. The Company typically invests in highly rated securities, and its investment policy limits the amount of credit exposure to any one issuer. The policy requires investments in fixed income instruments denominated and payable in U.S. dollars only and requires investments to be investment grade, with a primary objective of minimizing the potential risk of principal loss. The Company considers the declines in market value of its short-term investments to be temporary in nature. Fair values were determined for each individual security in the investment portfolio. When evaluating an investment for other-than-temporary impairment, the Company reviews factors such as length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates and the Company’s intent to sell, or whether it is more likely than not it will be required to sell the investment before recovery of the investment’s cost basis. As of June 30, 2020, the Company does not consider any of its investments to be other-than temporarily impaired.

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- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. + 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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