Note 9 - Fair Value Measurements - Schedule of Fair Value Reported on a Recurring Basis (Details) - USD ($)		Mar. 31, 2023	Dec. 31, 2022
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year	[1]	$ 5,369,536	$ 4,208,648
Equity Securities	[1]	2,790,105	2,302,959
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Equity Securities		2,790,105	2,302,959
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Domestic Equities [Member]
Equity Securities		2,374,520	1,720,410
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | International Equities [Member]
Equity Securities		286,086	448,405
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other [Member]
Equity Securities		129,499	134,144
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Equity Securities		5,369,536	4,208,648
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year		5,369,536	4,208,648
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Domestic Equities [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | International Equities [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Domestic Equities [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | International Equities [Member]
Equity Securities		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other [Member]
Equity Securities		$ 0	$ 0

[1] Amounts presented include balances held by our consolidated variable interest entities (“VIEs”), Grand Woods and TWS, as further discussed in Note 5 – Non-Controlling Interest and Variable Interest Entities. As of March 31, 2023, total assets and liabilities of Grand Woods, which are included in the consolidated balance sheets, were $2,222,323 and $1,403,674, respectively, including $50,495 of cash. Grand Woods noteholder has partial recourse to the Company. As of March 31, 2023, total assets and liabilities of TWS, which are included in the consolidated balance sheets, were $625,092 and $5,155, respectively, including $306,479 of cash.