Note 4 - Summary of Significant Accounting Policies - Summary of Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Warrant liabilities	$ 0	$ 0
Fair Value, Inputs, Level 1 [Member]
Warrant liabilities	0	0
Fair Value, Inputs, Level 2 [Member]
Warrant liabilities	0	0
Fair Value, Inputs, Level 3 [Member]
Warrant liabilities	$ 0	$ 0

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

Name:	us-gaap_DerivativeLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant