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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Revenue:    
Total revenue $ 34,007 $ 30,222
Cost of revenue:    
Total cost of revenue 13,574 12,284
Gross profit 20,433 17,938
Operating expenses:    
Sales and marketing 11,459 8,895
Research and development 8,882 8,522
General and administrative 5,112 4,452
Total operating expenses 25,453 21,869
Loss from operations (5,020) (3,931)
Interest and other income, net 258 177
Loss before income taxes (4,762) (3,754)
Income tax benefit 22 69
Net loss $ (4,740) $ (3,685)
Net loss per share of common stock:    
Basic and diluted $ (0.23) $ (0.19)
Weighted-average number of shares used in per share amounts:    
Basic and diluted 20,479,739 19,318,718
Subscription and services    
Revenue:    
Total revenue $ 31,112 $ 27,312
Cost of revenue:    
Total cost of revenue 9,811 8,774
Product and other    
Revenue:    
Total revenue 2,895 2,910
Cost of revenue:    
Total cost of revenue $ 3,763 $ 3,510