Quarterly report pursuant to Section 13 or 15(d)

Share Based Compensation - Summary of RSU Activity and Related Information (Details)

v3.7.0.1
Share Based Compensation - Summary of RSU Activity and Related Information (Details) - $ / shares
3 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Beginning Balance 3,351,795  
Number of RSUs Granted 556,952 1,385,000
Number of RSUs Vested  
Ending Balance 3,897,558  
Weighted-Average Exercise Price, Outstanding, Beginning $ 13.31  
Weighted-Average Exercise Price, Granted 7.71  
Weighted-Average Exercise Price, Vested  
Weighted-Average Exercise Price, Cancelled 17.88  
Weighted-Average Exercise Price, Outstanding, Ending $ 12.50  
Restricted Stock Units (RSUs) [Member]    
Beginning Balance 719,448  
Number of RSUs Granted 487,282  
Number of RSUs Vested (87,235)  
Number of RSUs Cancelled (8,436)  
Ending Balance 1,111,059  
Weighted-Average Exercise Price, Outstanding, Beginning $ 10.77  
Weighted-Average Exercise Price, Granted 8.35  
Weighted-Average Exercise Price, Vested 8.62  
Weighted-Average Exercise Price, Cancelled 8.31  
Weighted-Average Exercise Price, Outstanding, Ending $ 9.89