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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Oct. 31, 2019
Jan. 31, 2019
Statement Of Financial Position [Abstract]    
Allowance for accounts receivable $ 4,141 $ 2,728
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 100,000,000 100,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Class A Common Stock, par value $ 0.0001 $ 0.0001
Class A Common Stock, shares authorized 1,000,000,000 1,000,000,000
Class A Common Stock, shares issued 149,478,000 144,311,000
Class A Common Stock, shares outstanding 149,478,000 144,311,000