Note 2 - Marketable Securities and Investment Other Securities - Assets Valued at Fair Value (Details) - USD ($)	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021
Investment other securities	$ 1,000,000
Change in value of equities	2,400,000	$ 1,000,000	$ 1,000,000	$ 1,033,351
Additional Investment	1,400,000
Changes Measurement [Member]
Change in value of equities			(33,351)
Fair Value, Inputs, Level 3 [Member]
Investment other securities	1,000,000
Change in value of equities	2,400,000	1,000,000	1,000,000	1,000,000
Additional Investment	1,400,000
Fair Value, Inputs, Level 3 [Member] | Changes Measurement [Member]
Change in value of equities			0
Fair Value, Inputs, Level 1 [Member]
Change in value of equities	0	0	0	33,351
Additional Investment	0
Fair Value, Inputs, Level 1 [Member] | Changes Measurement [Member]
Change in value of equities			(33,351)
Fair Value, Inputs, Level 2 [Member]
Change in value of equities	0	$ 0	0	$ 0
Additional Investment	$ 0
Fair Value, Inputs, Level 2 [Member] | Changes Measurement [Member]
Change in value of equities			$ 0