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FAIR VALUE OF FINANCIAL INSTRUMENTS - Assets designated as Investments in debt and equity securities (Details) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022
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Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | $ 41,030,196 | $ 29,657,314
Equity securities |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 29,194,746 | 27,692,459
Mutual funds |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 11,160,918 | 1,302,973
Municipal bonds |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 674,532 | 661,882
Level 1 |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 41,030,196 | 29,657,314
Level 1 | Equity securities |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 29,194,746 | 27,692,459
Level 1 | Mutual funds |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | 11,160,918 | 1,302,973
Level 1 | Municipal bonds |  |
Fair value hierarchy of assets designated as Investments in debt and equity securities |  |
Fair value of investments | $ 674,532 | $ 661,882

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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