XML 92 R77.htm IDEA: XBRL DOCUMENT v3.5.0.2
Benefit Plans Textuals (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
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% 6.80%  
Assumed health care cost trend rates used in measuring the accumulated benefit obligation for retiree health care 2027 rate 5.00%    
Pension Benefits [Member]      
Benefit Plans (Textuals) [Abstract]      
Estimated net actuarial gain (loss) $ (872)    
Estimated prior service cost (86)    
Expected contribution to benefit plans in 2017 750    
Postretirement Health Coverage [Member]      
Benefit Plans (Textuals) [Abstract]      
Estimated net actuarial gain (loss) 181    
Estimated prior service cost 271    
Expected contribution to benefit plans in 2017 180    
401(k) [Member]      
Benefit Plans (Textuals) [Abstract]      
Defined contribution plan cost 2,535 $ 3,156 $ 2,788
KERP [Member]      
Benefit Plans (Textuals) [Abstract]      
Defined contribution plan cost $ 268 $ 300 $ 234