Note 12 - Earnings Per Share (Details Textual) - shares shares in Thousands	3 Months Ended			6 Months Ended
	Jul. 31, 2023		Jul. 31, 2022	Jul. 31, 2023		Jul. 31, 2022
Weighted Average Number of Shares Outstanding, Basic (in shares)	13,792	[1]	13,782	13,791	[1]	13,779

[1] Reflects the condensed consolidated balance sheet as of July 31, 2023 and condensed consolidated statement of operations for the three and six months ended July 31, 2023 and 2023 in the Form 10-Q.