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Note 9 - Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] |
|  |  |  |  | Quoted Prices |  |  | Realized Gains |  |  | Total Changes |
|  | Total Carrying |  |  | in Active |  |  | and (Losses) |  |  | in Fair Values |
|  | Amount in |  |  | Markets for |  |  | Included in |  |  | Included in |
|  | Consolidated |  |  | Identical |  |  | Current Period |  |  | Current Period |
|  | Balance Sheet |  |  | Assets |  |  | Period Earnings |  |  | Earnings (Loss) |
Marketable equity securities, U.S. Treasury trading securities, and corporate bonds at December 31, 2022 |  | $ | 42,289,339 |  |  | $ | 42,289,339 |  |  | $ | (9,485,637 | ) |  | $ | (6,150,053 | )
Marketable equity securities, U.S. Treasury trading securities, and corporate bonds at December 31, 2021 |  | $ | 158,162,401 |  |  | $ | 158,162,401 |  |  | $ | 44,610,838 |  |  | $ | 48,613,962 |

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- Definition Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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