Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 9,680	$ 3,760	$ 4,596	$ (149)
Other comprehensive income:
Pension adjustments, net of tax effect	135	2,260	270	2,587
Net comprehensive income	$ 9,815	$ 6,020	$ 4,866	$ 2,438