Note 13 - Stock Repurchase Program - Schedule of Stock Purchases (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												84 Months Ended	105 Months Ended
	Oct. 31, 2024	[1]	Jul. 31, 2024	[1]	Apr. 30, 2024	[1]	Jan. 31, 2024	[1]	Oct. 31, 2023	[1]	Jul. 31, 2023	[1]	Apr. 30, 2023	Jan. 31, 2025
Number of Shares Purchased (in shares)	683,760		500,000		5,000		24,744		2,300		6,863,789		3,379,522	11,530,519
Average Price Paid per Share (in dollars per share)	$ 1.31		$ 0.93		$ 0.79		$ 0.73		$ 0.73		$ 0.73		$ 0.42	$ 0.69
Number of Shares Purchased as Part of Publicly Announced Plans or Programs (in shares)	683,760		500,000		5,000		24,744		2,300		6,863,789		3,379,522	11,530,519
Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plan or Programs	$ 1,172		$ 2,071		$ 2,536		$ 2,540		$ 2,558		$ 2,560		$ 7,594	$ 3,172

[1] These shares of common stock were purchased through a private transaction