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Retirement Plan (Tables)
3 Months Ended
Nov. 30, 2011
Retirement Plan [Abstract]  
Schedules Of Net Benefit Costs
September 30, September 30,
       Three months  ended
November 30,
 

$ in thousands

     2011        2010  

Net periodic benefit cost:

         

Interest cost

     $ 81         $ 84   

Net amortization and deferral

       42           41   
    

 

 

      

 

 

 

Total net periodic benefit cost

     $ 123         $ 125