Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 7,875	$ 1,325	$ 12,471	$ 1,176
Other comprehensive income:
Pension adjustments, net of tax effect	3,545	566	3,815	3,153
Net comprehensive income	$ 11,420	$ 1,891	$ 16,286	$ 4,329