Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss attributable to common shareholders	$ (2,550)	$ (5,640)	$ (9,071)	$ (16,930)
Change in cumulative translation adjustment for sale of foreign entity	0	5,355	0	5,355
Other changes in cumulative translation adjustment	115	(284)	(376)	(663)
Comprehensive loss attributable to common shareholders	$ (2,435)	$ (569)	$ (9,447)	$ (12,238)