Note 3 - Cash, Cash Equivalents, and Restricted Cash (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2024	Jul. 31, 2024	Dec. 31, 2023
Restricted Cash and Cash Equivalents	$ 0		$ 2,150
Citibank N.A. [Member] | Letter of Credit [Member] | Collateral Pledged [Member]
Long-Term Debt		$ 2,150	$ 2,150