Net income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 15,534	$ 9,680	$ 14,092	$ 4,596
Weighted average shares outstanding - basic (shares)	16,272	16,108	16,242	16,071
Net effect of dilutive share-based on the treasury stock method using average market price (shares)	22	0	15	0
Totals (shares)	16,294	16,108	16,257	16,071
Net income (loss) per share - basic (usd per share)	$ 0.95	$ 0.60	$ 0.87	$ 0.29
Net income (loss) per share - diluted (usd per share)	$ 0.95	$ 0.60	$ 0.87	$ 0.29