Note 10 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands						1 Months Ended	9 Months Ended		12 Months Ended
	Jul. 24, 2026	Jan. 22, 2026	Oct. 18, 2022	Oct. 17, 2022	Aug. 29, 2011	Jan. 31, 2026	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025	Jul. 16, 2026	Jul. 15, 2026	Jun. 05, 2026
Common Stock, Par or Stated Value Per Share (in dollars per share)							$ 0.01		$ 0.01
Class of Warrants or Right, Subscription Price (in dollars per share)										$ 6.98	$ 7.06	$ 6.9
Proceeds from Issuance of Common Stock							$ 41,524	$ 0
Stock Repurchase Program, Number of Additional Shares Authorized to be Repurchased (in shares)					347,491			100,000
Share Repurchase Program, Authorized, Number of Shares (in shares)					797,491
Share Repurchase Program, Remaining Authorized, Number of Shares (in shares)					540,000		406,953
Treasury Stock, Shares, Acquired (in shares)							0
Treasury Stock, Common, Shares (in shares)							133,047		133,047
Treasury Stock, Common, Value							$ 946		$ 946
Over-subscription Warrant Holders [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,643,499
Proceeds from Issuance of Common Stock	$ 41,800
European Style Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)			5,258,320
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)				0.2
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 4.75	$ 12.5
Warrants, Target Trigger Price for Potential Acceleration of Exercise Date (in dollars per share)			$ 6.65	$ 17.5
Class Of Warrant Or Right, Exercised In Period (in shares)									4,186,010
Class Of Warrant Or Right, Percent, Exercised In Period									79.60%
Stock Issued During Period, Shares, Issued for Settlement of Warrants (in shares)									837,202
Class of Warrant or Right, Expired During Period (in shares)									1,072,310
Stock Issued During Period, Shares, Issued for Over-Subscription Privilege (in shares)		214,462
Proceeds from Warrant Exercises						$ 4,600			$ 5,000
Rights to Purchase Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)												1
Class of Warrant or Right, Expired During Period (in shares)	3,131,220
Class of Warrant or Right, Issued During Period (in shares)												6,550,435
Class of Warrants or Right, Subscription Price (in dollars per share)												$ 6.9
Class of Warrant or Right, Exercised During Period (in shares)	3,419,215
Class of Warrant or Right, Exercised During Period, Percent	52.10%
Stock Issued During Period, Shares, Subscription Rights Exercised (in shares)	3,419,215
Class of Warrant or Right, Unexercised (in shares)	3,131,220