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BALANCE SHEET COMPONENTS - Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Prepaid operating expenses $ 37,541   $ 37,864
Tenant improvement allowances 7,930   0
VAT receivables 6,516   5,068
Prepaid income taxes 1,548   19,690
Other current assets 12,173   12,043
Total prepaid expenses and other current assets $ 65,708   $ 74,665
Income taxes receivable   $ 18,000