Note 7 - Federal Income Taxes - Schedule of Capital Loss Carryforwards (Details)	12 Months Ended
	Dec. 31, 2025 USD ($)
Capital loss carryforwards	$ 13,889,528
Capital Loss Carryforward [Member]
Capital loss carryforwards	$ 48,624,147
Carryforward, Expiration Date 1 [Member]
Expiration date	Dec. 31, 2027
Carryforward, Expiration Date 1 [Member] | Capital Loss Carryforward [Member]
Capital loss carryforwards	$ 3,129,665
Carryforward, Expiration Date 2 [Member]
Expiration date	Dec. 31, 2028
Carryforward, Expiration Date 2 [Member] | Capital Loss Carryforward [Member]
Capital loss carryforwards	$ 7,864,982
Carryforward, Expiration Date 3 [Member]
Expiration date	Dec. 31, 2029
Carryforward, Expiration Date 3 [Member] | Capital Loss Carryforward [Member]
Capital loss carryforwards	$ 11,686,668
Carryforward, Expiration Date 4 [Member]
Expiration date	Dec. 31, 2030
Carryforward, Expiration Date 4 [Member] | Capital Loss Carryforward [Member]
Capital loss carryforwards	$ 25,942,832