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Investments (Tables) | 6 Months Ended
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Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Held-to-maturity | The Company’s commercial paper investments are classified as held-to-maturity on its balance sheets as of June 30, 2023 and December 31, 2022, respectively.
| Amortized Cost |  | Gross Unrealized |  | Fair Value |  | Net Carrying Value
|  | Gains |  | Losses |  |
As of June 30, 2023 | (In Thousands)
Investments |  |  |  |  |  |  |  |  |
Commercial paper | $ | 30,933 |  |  | $ | — |  |  | $ | (46) |  |  | $ | 30,887 |  |  | $ | 30,933 |
Total investments | $ | 30,933 |  |  | $ | — |  |  | $ | (46) |  |  | $ | 30,887 |  |  | $ | 30,933 |
| Amortized Cost |  | Gross Unrealized |  | Fair Value |  | Net Carrying Value
|  | Gains |  | Losses |  |
As of December 31, 2022 | (In Thousands)
Investments |  |  |  |  |  |  |  |  |
Commercial Paper | $ | 58,733 |  |  | $ | — |  |  | $ | (144) |  |  | $ | 58,589 |  |  | $ | 58,733 |
Total investments | $ | 58,733 |  |  | $ | — |  |  | $ | (144) |  |  | $ | 58,589 |  |  | $ | 58,733 |
The amortized cost and fair value of held-to-maturity securities as of June 30, 2023 and December 31, 2022, by contractual maturity, are shown below.
As of June 30, 2023 | Amortized Cost |  | Fair Value
| (In Thousands)
Within one year | $ | 30,933 |  |  | $ | 30,887 |
After one year through five years | — |  |  | — |
After 5 years through 10 years | — |  |  | — |
After 10 years | — |  |  | — |
Total investments | $ | 30,933 |  |  | $ | 30,887 |
As of December 31, 2022 | Amortized Cost |  | Fair Value
| (In Thousands)
Within one year | $ | 58,733 |  |  | $ | 58,589 |
After one year through five years | — |  |  | — |
After 5 years through 10 years | — |  |  | — |
After 10 years | — |  |  | — |
Total investments | $ | 58,733 |  |  | $ | 58,589 |
Unrealized Gain (Loss) on Investments | For those securities in an unrealized loss position, the length of time the securities were in such a position is as follows:
| Less than 12 Months |  | Total
| # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses
As of June 30, 2023 | (Dollars In Thousands)
Investments |  |  |  |  |  |  |  |  |  |  |
Commercial paper | 7 |  |  | $ | 30,887 |  |  | $ | (46) |  |  | 7 |  |  | $ | 30,887 |  |  | $ | (46) |
Total | 7 |  |  | $ | 30,887 |  |  | $ | (46) |  |  | 7 |  |  | $ | 30,887 |  |  | $ | (46) |
| Less than 12 Months |  | Total
| # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses
As of December 31, 2022 | (Dollars In Thousands)
Investments |  |  |  |  |  |  |  |  |  |  |
Commercial paper | 11 |  |  | $ | 58,589 |  |  | $ | (144) |  |  | 11 |  |  | $ | 58,589 |  |  | $ | (144) |
Total | 11 |  |  | $ | 58,589 |  |  | $ | (144) |  |  | 11 |  |  | $ | 58,589 |  |  | $ | (144) |

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- Definition Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A Reference 15: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5B Reference 16: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5B Reference 17: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5B Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5B + Details
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