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Benefit Plans Textuals (Details) (USD $)
 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Benefit Plans (Textuals) [Abstract]      
Percentage of defined contribution plan by plan participants 50.00%    
Assumed health care cost trend rates used in measuring the accumulated benefit obligation for retiree health care benefits 7.00% 7.30%  
Assumed health care cost trend rates used in measuring the accumulated benefit obligation for retiree health care 2018 rate 5.00%    
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax $ 0 $ 0 $ 8,860,000
Reclassification of prior service cost into SD&A expense upon plan curtailment 0 0 (3,117,000)
Defined Benefit Plan Modification, Impact in Other Comprehensive Income   1,788  
Pension Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial gain (loss) (559,000)    
Estimated prior service cost (86,000)    
Expected contribution to benefit plans in 2015 6,400,000    
Benefit Plans (Textuals) [Abstract]      
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 2.80% 3.00%  
Defined Benefit Plan Curtailment Impact on Deferred Tax Assets     3,411,000
Accumulated Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefits     5,449,000
Reclassification of prior service cost into SD&A expense upon plan curtailment 0 0 3,117,000
Defined Benefit Plan, Recognized Gain (Loss) Due to Curtailments, Tax     1,200,000
Retiree Health Care Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial gain (loss) 88,000    
Estimated prior service cost 271,000    
Expected contribution to benefit plans in 2015 160,000    
Benefit Plans (Textuals) [Abstract]      
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 3.80% 4.00%  
Reclassification of prior service cost into SD&A expense upon plan curtailment 0 0 0
KERP [Member]
      
Benefit Plans (Textuals) [Abstract]      
Defined contribution plan cost 234,000 233,000  
401(k) [Member]
      
Benefit Plans (Textuals) [Abstract]      
Defined contribution plan cost 2,788,000 11,231,000 10,866,000
SERP Curtailment [Member]
      
Benefit Plans (Textuals) [Abstract]      
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate     3.50%
Actuarial Loss on Remeasurement of Postemployment Benefits, Net Of Tax     302,000
Actuarial Loss on Remeasurement of Postemployment Benefits, Gross     492,000
Actuarial Loss on Remeasurement of Postemployment Benefits, Tax     $ 190,000