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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2023
Summary of Significant Accounting Policies [Abstract] |
Adjusted Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Financial Assets | The following tables show the adjusted cost, gross unrealized gains, gross unrealized losses, and fair value of our securities by significant investment category as of June 30, 2023 and December 31, 2022.
|  | June 30, 2023 |
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Investments Available for Sale |
Cash |  | $ | 1,693 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,693 |  |  | $ | 1,693 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  |  | 20,077 |  |  |  | — |  |  |  | — |  |  |  | 20,077 |  |  |  | 20,077 |  |  |  | — |
U.S. agency and treasury securities |  |  | 44,645 |  |  |  | 3 |  |  |  | (189 | ) |  |  | 44,459 |  |  |  | 4,200 |  |  |  | 40,259 |
|  |  | 64,722 |  |  |  | 3 |  |  |  | (189 | ) |  |  | 64,536 |  |  |  | 24,277 |  |  |  | 40,259 |
Total |  | $ | 66,415 |  |  | $ | 3 |  |  | $ | (189 | ) |  | $ | 66,229 |  |  | $ | 25,970 |  |  | $ | 40,259 |
|  | December 31, 2022 |
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Investments Available for Sale |
Cash |  | $ | 16,949 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,949 |  |  | $ | 16,949 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  |  | 66,493 |  |  |  | — |  |  |  | — |  |  |  | 66,493 |  |  |  | 66,493 |  |  |  | — |
U.S. agency and treasury securities |  |  | 68,958 |  |  |  | 9 |  |  |  | (386 | ) |  |  | 68,581 |  |  |  | 3,119 |  |  |  | 65,462 |
|  |  | 135,451 |  |  |  | 9 |  |  |  | (386 | ) |  |  | 135,074 |  |  |  | 69,612 |  |  |  | 65,462 |
Total |  | $ | 152,400 |  |  | $ | 9 |  |  | $ | (386 | ) |  | $ | 152,023 |  |  | $ | 86,561 |  |  | $ | 65,462 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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