Note 4 - Fair Value Measurements - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Derivative liability	$ 74,366,000	$ 0
Fair Value, Recurring [Member]
Derivative liability	74,366,000	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative liability	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative liability	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative liability	74,366,000	0
Fair Value, Recurring [Member] | Money Market Funds [Member]
Money market funds	0	300,000
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Money market funds	0	300,000
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Money market funds	0	0
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Money market funds	$ 0	$ 0