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INCOME TAXES (Schedule of Provision (Benefit) for Income Taxes) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Oct. 31, 2012
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2011
Jul. 31, 2011
Apr. 30, 2011
Jan. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Current:                      
U.S. taxes                 $ 5,460 $ 3,272 $ (4,410)
Foreign taxes                 2,612 2,595 1,079
Current provision (benefit) for income taxes                 8,072 5,867 (3,331)
Deferred:                      
U.S. taxes                 (1,931) (1,452) 189
Foreign taxes                 85 80 27
Deferred provision (benefit) for income taxes                 (1,846) (1,372) 216
Provision (benefit) for income taxes $ 1,219 $ 1,641 $ 1,103 $ 2,263 $ 840 $ 1,706 $ 1,050 $ 899 $ 6,226 $ 4,495 $ (3,115)