Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss attributable to common shareholders	$ (7,163)	$ (3,636)	$ (14,364)	$ (6,521)
Change in cumulative translation adjustment for sale of foreign entity	0	0	0	(331)
Other changes in cumulative translation adjustment	82	(41)	(49)	(160)
Comprehensive loss	$ (7,081)	$ (3,677)	$ (14,413)	$ (7,012)