Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,442)	$ (5,084)
Other comprehensive income:
Pension adjustments, net of tax effect	0	135
Net comprehensive loss	$ (1,442)	$ (4,949)