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Balance Sheet Components - Schedule of Expected Amortization Expenses for Intangible Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2019
Jan. 31, 2018
[1]
Balance Sheet Components Disclosure [Abstract]    
2020 $ 4,032  
2021 4,032  
2022 3,074  
2023 2,529  
2024 2,529  
Thereafter 3,922  
Net Carrying Amount $ 20,118 $ 5,057
[1] * As adjusted to reflect the impact of the full retrospective adoption of ASC 606