Revenue from Contracts with Customers - Revenue Disaggregated by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 29,572	$ 25,768
United States
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,920	2,690
Europe, Russia & CIS
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	15,262	11,858
Middle East & Africa
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,576	1,243
Asia-Pacific
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,030	8,900
Canada & Latin America
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3,784	$ 1,077