Condensed Consolidated Statements of Comprehensive Income (Loss) Unaudited - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (4,698)	$ (3,067)
Other comprehensive income:
Pension adjustments (net of tax expense of $120 and $46 at April 30, 2020 and 2019, respectively)	345	130
Comprehensive income (loss)	$ (4,353)	$ (2,937)