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CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - USD ($)
shares in Thousands, $ in Thousands
Jan. 31, 2017
Oct. 31, 2016
Jul. 31, 2016
Oct. 31, 2015
Statement of Financial Position [Abstract]        
Allowances of accounts receivable $ 2,297 $ 2,063    
Common stock, par value $ 0.001 $ 0.001    
Common stock, shares authorized     100,000 100,000
Common stock, shares issued 17,523 17,440    
Common stock, shares outstanding 17,523 17,440