Note 12 - Commitments and Contingencies (Details Textual) $ in Millions			1 Months Ended		52 Months Ended
	Feb. 09, 2024 USD ($)	Feb. 23, 2021	Feb. 29, 2024 USD ($)	Jan. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)
Loss Contingency, Claims Dismissed, Number		5
Audit Conducted by Alabama Department of Revenue [Member]
Loss Contingency, Damages Sought, Value				$ 3.3
Loss Contingency, Estimate of Maximum Taxable Lease Rental Payments					$ 2.9
Audit Conducted by Alabama Department of Revenue [Member] | Maximum [Member]
Loss Contingency, Damages Sought, Value			$ 10.1
Audit Conducted by SAT [Member]
Loss Contingency, Damages Sought, Value	$ 9.9