Note 7 - Fair Value of Financial Assets and Liabilities (Details Textual) $ in Millions	Jun. 30, 2026 USD ($)
Fair Value, Inputs, Level 3 [Member] \| Equity Securities [Member]
Equity Securities, FV-NI, Restricted	$ 1.7
Fair Value, Inputs, Level 2 [Member] \| Warrants Subject to Lock Up Until September 30, 2026 [Member]
Equity Securities, FV-NI, Restricted	$ 1.5

Amount of restricted investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477220/954-210-45-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478600/954-210-50-2

Name:	us-gaap_EquitySecuritiesFvNiRestricted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant