Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 4,480	$ 3,892	$ 3,335	$ 6,692
Other comprehensive income:
Pension adjustments, net of tax effect	341	130	1,031	390
Net comprehensive income	$ 4,821	$ 4,022	$ 4,366	$ 7,082