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Employee Benefit Plans (Narrative) (Details) (USD $)
12 Months Ended
Jun. 30, 2011
Jun. 30, 2011
Maximum [Member]
Mar. 31, 2011
Supplemental Executive Retirement Plan [Member]
Employer contribution per participant   $ 800  
Description of contributions Employer contributions are vested based upon tenure over a five-year period.    
Vesting period of employee contributions, in years 5    
Employer contributions     $ 2,400,000