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Note 2 - Cash, Cash Equivalents, and Investments - Major Security Type (Details) - USD ($)
Mar. 31, 2025
Dec. 31, 2024
Cash and cash equivalent, fair value $ 5,064,941 $ 6,506,750
Cash, adjusted cost 1,542,566 926,287
Money Market Funds, adjusted cost [1] 3,522,375 5,580,463
Cash and cash equivalents, adjusted cost 5,064,941 6,506,750
Corporate Bonds, allowance for credit loss 0 0
Corporate Bonds, gross unrealized holding gains 0 0
Corporate Bonds, gross unrealized holding losses (382) (149)
Total, fair value 7,349,031 9,263,178
Total, adjusted 7,349,413 9,263,327
Cash [Member]    
Cash and cash equivalent, fair value 1,542,566 926,287
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalent, fair value [1] 3,522,375 5,580,463
Short-term Corporate Bonds [Member]    
Corporate Bonds, adjusted cost [2],[3] 2,284,472 2,756,577
Short-term Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]    
Corporate Bonds, fair value [2],[3] 2,284,090 [4],[5] 2,756,428
Corporate Bonds, allowance for credit loss [2],[3] 0 0
Corporate Bonds, gross unrealized holding gains [2],[3] 0 0
Corporate Bonds, gross unrealized holding losses [2],[3] $ (382) $ (149)
[1] All our money market funds were invested in U.S. Government money market funds.
[2] For the three months ended September 30, 2024 and 2023, the Company received discounts of $9,023 and $1,148 to purchase held-to-maturity investment securities, respectively. For the nine months ended September 30, 2024 and 2023, the Company received discounts of $70,495 and $33,982 to purchase held-to-maturity investment securities, respectively. For the year ended December 31, 2023, the Company received discounts of $39,012 to purchase held-to-maturity investment securities.
[3] The Company considers the decline in market value of its investment portfolio to be temporary in nature. As of September 30, 2024 and December 31, 2023, the Company did not consider any of its investments to be other-than-temporarily impaired and no allowance for credit losses was recorded.
[4] For the three months ended June 30, 2024 and 2023, the Company received discounts of $31,357 and $17,601 to purchase held-to-maturity investment securities, respectively. For the six months ended June 30, 2024 and 2023, the Company received discounts of $61,472 and $32,834 to purchase held-to-maturity investment securities, respectively. For the year ended December 31, 2023, the Company received discounts of $39,012 to purchase held-to-maturity investment securities.
[5] The Company considers the declines in market value of its investment portfolio to be temporary in nature. As of September 30, 2024 and December 31, 2023, the Company did not consider any of its investments to be other-than-temporarily impaired and no allowance for credit losses was recorded.