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Investments (Tables) | 9 Months Ended
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Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-Sale Marketable Securities | The Company’s portfolio of available-for-sale marketable securities consists of the following:
| September 30, 2023
| Amortized Cost |  | Gross unrealized |  | Estimated Fair Value
(In thousands) |  | Gains |  | Losses |
Available-for-sale securities, current portion |  |  |  |  |  |  |
U.S. government securities | $ | 5,030 |  |  | $ | - |  |  | $ | 2 |  |  | $ | 5,028 |
Corporate debt securities | 15,901 |  |  | 1 |  |  | 4 |  |  | 15,898 |
Other debt securities | 868 |  |  | - |  |  | - |  |  | 868 |
Total short-term | 21,799 |  |  | 1 |  |  | 6 |  |  | 21,794 |
Available-for-sale securities, long-term |  |  |  |  |  |  |
Other debt securities | 1,158 |  |  | 2 |  |  | 4 |  |  | 1,156 |
Total marketable securities | $ | 22,957 |  |  | $ | 3 |  |  | $ | 10 |  |  | $ | 22,950 |
| December 31, 2022
| Amortized Cost |  | Gross unrealized |  | Estimated Fair Value
(In thousands) |  | Gains |  | Losses |
Available-for-sale securities, current portion |  |  |  |  |  |  |
U.S. government securities | $ | 15,087 |  |  | $ | 1 |  |  | $ | 37 |  |  | $ | 15,051 |
Corporate debt securities | 26,057 |  |  | 6 |  |  | 16 |  |  | 26,047 |
Other debt securities | 2,169 |  |  | - |  |  | 7 |  |  | 2,162 |
Total short-term | 43,313 |  |  | 7 |  |  | 60 |  |  | 43,260 |
Available-for-sale securities, long-term |  |  |  |  |  |  |
Other debt securities | 1,329 |  |  | 3 |  |  | - |  |  | 1,332 |
Total marketable securities | $ | 44,642 |  |  | $ | 10 |  |  | $ | 60 |  |  | $ | 44,592 |
| September 30, 2023
(In thousands) | Amortized Cost |  | Estimated Fair Value
Due in one year or less | $ | 21,799 |  |  | $ | 21,794 |
Due after one year through five years | 1,158 |  |  | 1,156 |
Total | $ | 22,957 |  |  | $ | 22,950 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 + Details
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