Note 9 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions		90 Months Ended
	Aug. 12, 2025	Sep. 30, 2025	Dec. 31, 2024
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001	$ 0.0001
Proceeds from Issuance or Sale of Equity		$ 568.0
Pre-Funded Warrants in Connection with Underwriting Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	6,710,000
Class of Warrant Or Right, Purchase Price (in dollars per share)	$ 2.9999
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.0001
Underwriting Agreement [Member]
Stock Issued During Period, Shares, New Issues	33,290,000
Shares Issued, Price Per Share	$ 3
Proceeds from Issuance or Sale of Equity	$ 129.3
Expense Related to Distribution or Servicing and Underwriting Fees	8.3
Offering Cost, Expense	$ 0.4
Over-Allotment Option [Member]
Stock Issuable During Period, Shares (in shares)	6,000,000