XML 63 R38.htm IDEA: XBRL DOCUMENT v3.20.2
Composition of certain financial statement captions - Schedule Of Finite Lived Intangible Assets (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jul. 31, 2020
Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangibles $ 1,470 $ 1,470
Less accumulated amortization (390) (271)
Net carrying value $ 1,080 1,199
Acquired technology    
Finite-Lived Intangible Assets [Line Items]    
Useful life (years) 5 years  
Finite-lived intangibles $ 490 490
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Useful life (years) 7 years  
Finite-lived intangibles $ 980 $ 980