Note 10 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 18, 2022	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 19, 2025	Dec. 31, 2024	Aug. 29, 2011
Share Repurchase Program, Authorized, Number of Shares (in shares)						100,000	797,491	347,491
Share Repurchase Program, Remaining Authorized, Number of Shares (in shares)							540,000
Treasury Stock, Shares, Acquired (in shares)		51,463
Treasury Stock, Value, Acquired, Cost Method		$ 366	$ (0)	$ 366	$ (0)
Shares Acquired, Average Cost Per Share (in dollars per share)		$ 7.08
Treasury Stock, Common, Shares (in shares)		133,047		133,047			81,584
Treasury Stock, Common, Value		$ 946		$ 946			$ 580
European Style Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)	5,258,320	4,913,340		4,913,340
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 4.75	$ 4.75		$ 4.75
Warrants, Target Trigger Price for Potential Acceleration of Exercise Date (in dollars per share)	$ 6.65
Class Of Warrant Or Right, Exercised In Period (in shares)		344,980
Class Of Warrant Or Right, Percent, Exercised In Period		6.60%
Stock Issued During Period, Shares, Issued for Settlement of Warrants (in shares)		68,996