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Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2019 | Jan. 31, 2019
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Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] |  |  |  |  |
Prepaid expenses |  | $ 12,029 |  | $ 9,323 |
Capitalized qualifying implementation costs incurred in a hosting arrangement that is a service contract, net | [1] | 1,318 |  | 1,663 |
Other current assets |  | 5,212 |  | 3,237 |
Total prepaid expenses and other current assets |  | $ 18,559 | [2] | $ 14,223 | [3]
[1] | Net capitalized stock-based compensation expense and the amortization of the capitalized costs were not material for the periods presented. We have not recorded any related impairment charges during the periods presented.
[2] | As reported and disclosed under ASC Topic 842
[3] | As reported and disclosed under ASC Topic 840

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