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Dividends - Additional Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
0 Months Ended 12 Months Ended 0 Months Ended
Dec. 12, 2012
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Dec. 12, 2013
Subsequent Event [Member]
Dividend payment $ 0.65       $ 0.70
Payment of dividend to shareholders $ 9,600 $ 9,646 $ 8,123 $ 8,100 $ 11,000
Dividend paid date Nov. 29, 2012       Nov. 29, 2013