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Investments | 12 Months Ended
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Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Investments | Investments Available-for-sale securities The Company’s portfolio of available-for-sale marketable securities consists of the following:
| December 31, 2024
| Amortized Cost |  | Gross unrealized |  | Estimated Fair Value
(In thousands) |  | Gains |  | Losses |
Available-for-sale securities, current portion |  |  |  |  |  |  |
U.S. government securities | $ | 1,493 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1,494 |
Corporate debt securities | 5,775 |  |  | 14 |  |  | (1) |  |  | 5,788 |
Other debt securities | 1,912 |  |  | 4 |  |  | — |  |  | 1,916 |
Total short-term | 9,180 |  |  | 19 |  |  | (1) |  |  | 9,198 |
Available-for-sale securities, long-term |  |  |  |  |  |  |
Corporate debt securities | 3,210 |  |  | 4 |  |  | (2) |  |  | 3,212 |
Other debt securities | 1,412 |  |  | 5 |  |  | (1) |  |  | 1,416 |
Total available-for-sale securities | $ | 13,802 |  |  | $ | 28 |  |  | $ | (4) |  |  | $ | 13,826 |
| December 31, 2023
| Amortized Cost |  | Gross unrealized |  | Estimated Fair Value
(In thousands) |  | Gains |  | Losses |
Available-for-sale securities, current portion |  |  |  |  |  |  |
U.S. government securities | $ | 5,169 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 5,170 |
Corporate debt securities | 9,673 |  |  | 5 |  |  | (4) |  |  | 9,674 |
Other debt securities | 1,443 |  |  | 1 |  |  | — |  |  | 1,444 |
Total short-term | 16,285 |  |  | 7 |  |  | (4) |  |  | 16,288 |
Available-for-sale securities, long-term |  |  |  |  |  |  |
Other debt securities | 545 |  |  | 3 |  |  | — |  |  | 548 |
Total available-for-sale securities | $ | 16,830 |  |  | $ | 10 |  |  | $ | (4) |  |  | $ | 16,836 |
The following table summarizes the contractual maturities of the short-term and long-term available-for-sale investments as of December 31, 2024:
(In thousands) | Amortized Cost |  | Estimated Fair Value
Due in one year or less | $ | 9,180 |  |  | $ | 9,198 |
Due after one year through five years | 4,622 |  |  | 4,628 |
Total | $ | 13,802 |  |  | $ | 13,826 |
The following tables present information about the available-for-sale investments that had been in a continuous unrealized loss position for less than 12 months:
| December 31, 2024
| Less than 12 months |  | Total
(In thousands) | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Corporate debt securities | $ | 2,091 |  |  | $ | (3) |  |  | $ | 2,091 |  |  | $ | (3) |
Other debt securities | 1,030 |  |  | (1) |  |  | 1,030 |  |  | (1) |
Total | $ | 3,121 |  |  | $ | (4) |  |  | $ | 3,121 |  |  | $ | (4) |
| December 31, 2023
| Less than 12 months |  | Total
(In thousands) | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Corporate debt securities | $ | 5,871 |  |  | $ | (4) |  |  | $ | 5,871 |  |  | $ | (4) |
Other debt securities | 906 |  |  | (1) |  |  | 906 |  |  | (1) |
Total | $ | 6,777 |  |  | $ | (5) |  |  | $ | 6,777 |  |  | $ | (5) |
As of December 31, 2024 and 2023, all available-for-sale securities investments presented above with unrealized losses have been in an unrealized loss position for less than 12 months. As of December 31, 2024, none of our available-for-sale marketable securities exhibited risk of credit loss and therefore no allowance for credit losses was recorded. Equity investments The Company periodically invests in non-marketable equity securities of private companies without a readily determinable fair value to promote business and strategic objectives. The non-marketable equity securities are carried at cost minus impairment, if any, plus or minus changes resulting from observable process changes in orderly transactions for identical or similar investments of the same issuer. These securities included Series E Preferred Stock in PanTHERA CryoSolutions, Inc. with a fair value of $1.0 million as of December 31, 2024 and December 31, 2023. The Company also owned securities of Series A-1 and A-2 Preferred Stock in iVexSol, Inc "iVexSol". During the six months ended June 30, 2024, the Company received communications that triggered a going concern for the investment. As of June 30, 2024, the Company determined that the fair value of its equity interest was less than its carrying amount, and no longer recoverable, triggering an impairment charge of $4.1 million, which represented the entirety of the value of the investment. As of December 31, 2023, the carrying value of the iVexSol, Inc. securities was $4.1 million.

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- Definition The entire disclosure for investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 321 -Publisher FASB -URI https://asc.fasb.org/321/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 325 -Publisher FASB -URI https://asc.fasb.org/325/tableOfContent + Details
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