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v3.25.1

Investments | 3 Months Ended
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Mar. 31, 2025
Investments |
Investments | 4. Investments All our marketable securities are classified as held-to-maturity securities and reported at amortized cost pursuant to Accounting Standards Codification (“ASC”) 320, Investments – Debt and Equity Securities, as we have the intent and ability to hold all investments to maturity. Below is a summary of the amortized cost and estimated market values of our marketable securities as of March 31, 2025, and December 31, 2024. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2025 | ​ | December 31, 2024
​ |  | Amortized |  | Market |  | Amortized |  | Market
​ |  | Cost |  | Value |  | Cost |  | Value
​ | ​ | (Dollars in thousands)
Marketable securities: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Current | ​ | $ | 856 | ​ | $ | 853 | ​ | $ | 852 | ​ | $ | 848
Due from one through five years | ​ |  | 3,189 | ​ |  | 3,184 | ​ |  | 2,692 | ​ |  | 2,677
Due from six through ten years | ​ |  | 2,343 | ​ |  | 2,243 | ​ |  | 2,837 | ​ |  | 2,749
Total | ​ | $ | 6,388 | ​ | $ | 6,280 | ​ | $ | 6,381 | ​ | $ | 6,274
​ The unrealized gains and losses on marketable securities at March 31, 2025, and at December 31, 2024, were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2025 | ​ | December 31, 2024
​ |  | Unrealized |  | Unrealized |  | Unrealized |  | Unrealized
​ |  | Gains |  | Losses |  | Gains |  | Losses
​ | ​ | (Dollars in thousands)
Marketable securities | ​ | $ | 4 | ​ | $ | (112) | ​ | $ | 5 | ​ | $ | (112)
​ The estimated market values provided are Level 2 valuations as defined by ASC 820, Fair Value Measurements and Disclosures. We reviewed our portfolio of investments as of March 31, 2025, and determined that no other-than-temporary market value impairment exists.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/940-320/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph b -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-10 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/942-320/tableOfContent + Details
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