Condensed Consolidated Statements of Comprehensive Income (Loss) Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,932	$ 2,524	$ 4,835	$ 5,341
Other comprehensive income
Pension adjustments	1,376	148	27	444
Comprehensive income (loss)	$ 4,308	$ 2,672	$ 4,862	$ 5,785