Note 5 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Cash and Cash Equivalent	$ 86,930	$ 86,930		$ 41,514
Interest Received In Kind		56	$ (0)
Asset, Impairment Loss		0		0
Fair Value, Recurring [Member]
Liabilities, Fair Value Disclosure	0	0		0
Convertible Promissory Note Receivable [Member]
Financing Receivable, Accrued Interest, after Allowance for Credit Loss	56	56
Receivables, Fair Value Disclosure	2,520	2,520
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	2,464	2,464
Interest Received In Kind	49	56
Cash Held in Banks [Member]
Cash and Cash Equivalent	$ 334	$ 334		$ 197