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Note 9 - Fair Value - Fair Values for Investments (Details)	6 Months Ended
	Jun. 30, 2022 USD ($)
Realized gains (losses)	$ (1,108,834)
Changes in fair values	(12,437,428)
Reported Value Measurement [Member]
Carrying amount	61,867,658
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Carrying amount	$ 61,867,658

X

- Definition

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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- Definition

Amount of realized gain (loss) on investment in debt and equity securities.

+ References

No definition available.

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- Definition

Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

+ References

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