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Retirement Plan
6 Months Ended
Feb. 29, 2012
Retirement Plan [Abstract]  
Retirement Plan

(11) Retirement Plan

The Company has a supplemental non-qualified, unfunded retirement plan for six former employees. Plan benefits are based on the participant's average total compensation during the three highest compensation years of employment during the ten years immediately preceding the participant's retirement or termination. This unfunded supplemental retirement plan is not subject to the minimum funding requirements of ERISA. The Company has purchased life insurance policies on four of the participants named in this supplemental retirement plan to provide partial funding for this liability. Components of net periodic benefit cost for the Company's supplemental retirement plan are classified as general and administrative expenses and include:

    Three months ended     Six months ended  
    February 29, February 28,   February 29, February 28,
$ in thousands   2012 2011   2012 2011
Net periodic benefit cost:                
Interest cost $ 81 $ 84 $ 162 $ 167
Net amortization and deferral   42   41   84   82
Total net periodic benefit cost $ 123 $ 125 $ 246 $ 249