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Benefit Plans Benefit Plans (ESOP) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
ESOP, requisite service period 1 year    
ESOP, requisite service period (per year) 1000 hours    
ESOP, number of allocated shares acquired with employer loan 60,000    
ESOP, shares purchased to partially fulfill annual discretionary allocation 70,000 35,781  
ESOP, vesting period 6 years    
ESOP expense $ 1,100 $ 558,000,000 $ 1,400
Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
ESOP participation age limit 21 years