Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 15,534	$ 9,680	$ 14,092	$ 4,596
Other comprehensive income:
Pension adjustments, net of tax effect	0	135	0	270
Net comprehensive income	$ 15,534	$ 9,815	$ 14,092	$ 4,866