Note 9 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended						9 Months Ended	14 Months Ended
	Sep. 12, 2024	Jul. 25, 2024	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2025	Jul. 31, 2025
Stock Issued During Period, Value, New Issues			$ 70,912	$ 581	$ 7,816	$ 585	$ 5,395	$ 165
Share Purchase Agreement [Member] | New Circle Principal Investments LLC [Member]
Equity Offering, Maximum Amount		$ 50,000
Equity Offering, Exchange Cap, Shares (in shares)		1,721,755
Equity Offering, Exchange Cap, Minimum Average Price Per Share (in dollars per share)		$ 1.41
Equity Offering, Period (Month)		36 months
Equity Offering, Maximum Beneficial Ownership, Percentage		4.99%
Equity Offering, Purchase Price, Percentage of Volume Weighted Average Price for One Day or Intraday Trading Period		96.50%
Equity Offering, Purchase Price, Percentage of Volume Weighted Average Price for Three Consecutive Day Trading Period		97.50%
Equity Offering, Maximum Shares, Percentage of Average Daily Trading Volume		100.00%
Equity Offering, Maximum Shares Per Day (in shares)		400,000
Stock Issued During Period, Shares, New Issues (in shares)		225,563								8,980,713
Stock Issued During Period, Value, New Issues		$ 282								$ 27,754
Stock Issuance, Commitment Fee		$ 200
At Market Issuance Sales Agreement (the “ATM”) [Member] | Alliance Global Partners (“A.G.P.”) [Member]
Equity Offering, Maximum Amount	$ 2,600										$ 75,000
Equity Offering, Period (Month)	36 months
Stock Issued During Period, Shares, New Issues (in shares)									20,056,239
Stock Issued During Period, Value, New Issues									$ 58,462
Equity Offering, Cash Commission, Percentage of Gross Proceeds	3.00%