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Earnings per Share and Stock-Based Compensation - Schedule of Changes in Non-Vested Shares under Option, Excluding Performance Based Options (Detail) (Non-Performance Based Options [Member], USD $)
3 Months Ended
Jan. 31, 2014
Non-Performance Based Options [Member]
 
Stockholders' Equity [Line Items]  
Non-vested, beginning balance, Shares 2,784,826
Granted, Shares   
Vested, Shares (778,675)
Canceled, Shares (5,000)
Non-vested, ending balance, Shares 2,001,151
Non-vested, beginning balance, Weighted-Average Grant Date Fair Value $ 2.95
Granted, Weighted-Average Grant Date Fair Value   
Vested, Weighted-Average Grant Date Fair Value $ 2.28
Canceled, Weighted-Average Grant Date Fair Value $ 3.51
Non-vested, ending balance, Weighted-Average Grant Date Fair Value $ 3.19