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Statement of Comprehensive Loss Statement - USD ($)
$ in Thousands
12 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]      
Net loss $ (53,903) $ (51,208) $ (29,684)
Foreign currency translation adjustments 129 (35) (350)
Comprehensive loss $ (53,774) $ (51,243) $ (30,034)