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Marketable Investment Securities | 9 Months Ended
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Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
Marketable Investment Securities | (4) Marketable Investment Securities The Company has classified its marketable investment securities as available-for-sale securities, all of which are debt securities. These securities are carried at fair value with unrealized holding gains and losses, net of the related tax effect, included in accumulated other comprehensive income (loss) in stockholders’ equity until realized. Gains and losses on investment security transactions are reported on the specific-identification method. Dividend income is recognized on the ex-dividend date and interest income is recognized on an accrual basis. The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security as of September 30, 2024, and December 31, 2023, were as follows: Schedule of Available for Sale Securities
September 30, 2024 |  | Amortized Cost |  |  | Gross unrealized holding gains |  |  | Gross unrealized holding losses |  |  | Aggregate fair value |
Government treasury bills |  | $ | 16,070,749 |  |  | $ | 9,942 |  |  | $ | - |  |  | $ | 16,080,691 |
|  | $ | 16,070,749 |  |  | $ | 9,942 |  |  | $ | - |  |  | $ | 16,080,691 |
December 31, 2023 |  | Amortized Cost |  |  | Gross unrealized holding gains |  |  | Gross unrealized holding losses |  |  | Aggregate fair value |
Government treasury bills |  | $ | 14,272,530 |  |  | $ | 8,574 |  |  | $ | - |  |  | $ | 14,281,104 |
U.S. government agency securities |  |  | 2,983,999 |  |  |  | - |  |  |  | (1,315 | ) |  |  | 2,982,684 |
|  | $ | 17,256,529 |  |  | $ | 8,574 |  |  | $ | (1,315 | ) |  | $ | 17,263,788 |
Maturities of debt securities classified as available-for-sale securities as of September 30, 2024 are as follows: Schedule of Maturities of Debt Securities Classified as Available-for-Sale Securities
September 30, 2024 |  | Amortized Cost |  |  | Aggregate fair value |
Due within one year |  | $ | 16,070,749 |  |  | $ | 16,080,691 |
There were no sales of marketable investment securities during either the three or nine months ended September 30, 2024 and 2023 and therefore no realized gains or losses. Additionally, during the three months ended September 30, 2024 and 2023, $6.7 million and $6.0 million of marketable investment securities matured, and during the nine months ended September 30, 2024 and 2023, $24.9 million and $23.9 million of marketable securities matured, respectively. The Company determined there were no other-than-temporary impairments for either the three or nine months ended September 30, 2024 and 2023.

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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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