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Note 15 - Treasury Stock (Details Textual) - USD ($) shares in Thousands, $ in Millions	3 Months Ended	6 Months Ended
	Jul. 31, 2024	Jul. 31, 2024	Jan. 31, 2024	Dec. 07, 2022	Oct. 04, 2021
Share Repurchase Program, Authorized, Amount				$ 1	$ 3
Stock Repurchase Program, Authorized Repurchase Amount Used			$ 1
Stock Repurchased During Period, Shares (in shares)	0	0

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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