Note 1 - Organization and Summary of Significant Accounting Policies - Earnings Per Share (Details) - shares shares in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Total dilutive shares (in shares)	0	50
Share-Based Payment Arrangement, Option [Member]
Stock options (in shares)	0	37
Restricted Stock [Member]
Stock options (in shares)	0	13