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Employee Retirement Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2014
Apr. 30, 2013
Defined Benefit Plan Disclosure [Line Items]        
Number of Unfunded Defined Benefit Retirement Plans     2  
Costs and payments related to supplemental retirement plans        
Service cost $ 117 $ 117 $ 235 $ 236
Interest cost 318 261 636 521
Amortization of prior service obligation 161 211 322 422
Amortization of unrecognized losses 3 36 6 72
Total costs 599 625 1,199 1,251
Benefits paid $ 211 $ 211 $ 444 $ 444