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Balance Sheet Components Balance Sheet Components - Goodwill (Details)
$ in Thousands
12 Months Ended
Jan. 31, 2019
USD ($)
Goodwill  
Goodwill, beginning balance $ 0 [1]
Goodwill acquired 10,997
Goodwill, ending balance $ 10,997
[1] * As adjusted to reflect the impact of the full retrospective adoption of ASC 606