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Employee Benefit Plans (Tables)
6 Months Ended
Dec. 31, 2016
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
December 31,
 
Six Months Ended
December 31,
 
 
2016
 
2015
 
2016
 
2015
(In thousands)
 
 
 
 
Service cost
 
$
124

 
$
97

 
$
248

 
$
194

Interest cost
 
1,397

 
1,546

 
2,794

 
3,092

Expected return on plan assets
 
(1,607
)
 
(1,710
)
 
(3,214
)
 
(3,420
)
Amortization of net loss(1)
 
508

 
370

 
1,016

 
740

Net periodic benefit cost
 
$
422

 
$
303

 
$
844

 
$
606

___________
(1) These amounts represent the estimated portion of the net loss in AOCI that is expected to be recognized as a component of net periodic benefit cost over the current fiscal year. 
Pension Plan [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Assumptions Used [Table Text Block]
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost
 
Fiscal
 
2017
 
2016
Discount rate
3.55%
 
4.40%
Expected long-term rate of return on plan assets
7.75%
 
7.50%
Other Postretirement Benefit Plan [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 for the Retiree Medical Plan and Death Benefit for the three and six months ended December 31, 2016 and 2015. Net periodic postretirement benefit cost for the three and six months ended December 31, 2016 was based on employee census information and asset information as of July 1, 2016. 
 
 
Three Months Ended
December 31,
 
Six Months Ended
December 31,
 
 
2016
 
2015
 
2016
 
2015
(In thousands)
 
 
 
 
 
 
 
 
Service cost
 
$
190

 
$
347

 
$
380

 
$
694

Interest cost
 
207

 
299

 
414

 
598

Amortization of net gain
 
(157
)
 
(49
)
 
(314
)
 
(98
)
Amortization of net prior service credit
 
(439
)
 
(439
)
 
(878
)
 
(878
)
Net periodic postretirement benefit (credit) cost
 
$
(199
)
 
$
158

 
$
(398
)
 
$
316


Schedule of Assumptions Used [Table Text Block]
Weighted-Average Assumptions Used to Determine Net Periodic Postretirement Benefit Cost 
 
Fiscal
 
2017
 
2016
Retiree Medical Plan discount rate
3.73%
 
4.69%
Death Benefit discount rate
3.79%
 
4.74%