Note 8 - Earnings Per Share (Details Textual) - $ / shares		3 Months Ended
	Jun. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Dec. 31, 2024
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 1.41	$ 1.74
Pre-Funded Warrants [Member]
Stock Issued During Period, Shares, Exercise of Warrants (in shares)	845,000	844,061
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.001