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Investments | 3 Months Ended
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Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments | Investments The following table represents the Company’s available for sale investments by major security type (amounts in thousands):
| March 31, 2023
| Amortized Cost |  | Gross Unrealized Loss |  | Total Fair Value
Investments: |  |  |  |  |
U.S. Treasury securities | $ | 69,791 |  |  | $ | (339) |  |  | $ | 69,452 |
Total investments | $ | 69,791 |  |  | $ | (339) |  |  | $ | 69,452 |
| December 31, 2022
| Amortized Cost |  | Gross Unrealized Loss |  | Total Fair Value
Investments: |  |  |  |  |
U.S. Treasury securities | $ | 114,778 |  |  | $ | (877) |  |  | $ | 113,901 |
Total investments | $ | 114,778 |  |  | $ | (877) |  |  | $ | 113,901 |
The Company’s investment instruments and cash and cash equivalents are classified using Level 1 inputs within the fair value hierarchy and are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. Debt securities have a weighted-average maturity of 0.24 years as of March 31, 2023.

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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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