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Employee Benefit Plans (Tables)
9 Months Ended
Mar. 31, 2016
Pension Plan [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Net Periodic Benefit Costs
The net periodic benefit cost for the defined benefit pension plans is as follows:
 
 
Three Months Ended
March 31,
 
Nine Months Ended
March 31,
 
 
2016
 
2015
 
2016
 
2015
(In thousands)
 
 
 
 
 
 
Service cost
 
$
97

 
$
97

 
$
291

 
$
291

Interest cost
 
1,546

 
1,415

 
4,638

 
4,245

Expected return on plan assets
 
(1,710
)
 
(1,823
)
 
(5,130
)
 
(5,469
)
Amortization of net loss(1)
 
370

 
303

 
1,110

 
909

Net periodic benefit cost (credit)
 
$
303

 
$
(8
)
 
$
909

 
$
(24
)

___________
(1) These amounts represent the estimated portion of the net loss remaining in AOCI that is expected to be recognized as a component of net periodic benefit cost over the current fiscal year.
Schedule of Weighted Average Assumptions Used
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost
 
Fiscal
 
2016
 
2015
Discount rate
4.40%
 
4.15%
Expected long-term rate of return on plan assets
7.50%
 
7.50%
Other Postretirement Benefit Plan, Defined Benefit [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Net Periodic Benefit Costs
The following table shows the components of net periodic postretirement benefit cost (credit) for the Retiree Medical Plan and Death Benefit for the three and nine months ended March 31, 2016 and 2015. Net periodic postretirement benefit credit (credit) for the three and nine months ended March 31, 2016 is based on employee census information and asset information as of June 30, 2015. 
 
 
Three Months Ended
March 31,
 
Nine Months Ended
March 31,
 
 
2016
 
2015
 
2016
 
2015
(In thousands)
 
 
 
 
Service cost
 
$
347

 
$
299

 
$
1,041

 
$
897

Interest cost
 
299

 
235

 
897

 
705

Amortization of net gain
 
(49
)
 
(125
)
 
(147
)
 
(375
)
Amortization of net prior service credit
 
(439
)
 
(439
)
 
(1,317
)
 
(1,317
)
Net periodic postretirement benefit cost (credit)
 
$
158

 
$
(30
)
 
$
474

 
$
(90
)
Schedule of Weighted Average Assumptions Used
Weighted-Average Assumptions Used to Determine Net Periodic Postretirement Benefit Cost 
 
Fiscal
 
2016
 
2015
Retiree Medical Plan discount rate
4.69%
 
4.29%
Death Benefit discount rate
4.74%
 
4.48%