Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,325	$ 4,480	$ 1,176	$ 3,335
Other comprehensive income:
Pension adjustments, net of tax effect	566	341	3,153	1,031
Net comprehensive income	$ 1,891	$ 4,821	$ 4,329	$ 4,366