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Benefit Plans
 6 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
BENEFIT PLANS
BENEFIT PLANS
We sponsor several defined benefit pension plans. Additionally, we provide varying levels of postretirement health care and life insurance benefits to some U.S. employees.
The table below summarizes the components of net periodic pension income:
 
Three Months Ended December 31,
 
Six Months Ended December 31,
(in thousands)
2017
 
2016
 
2017
 
2016
Service cost
$
406

 
$
727

 
$
810

 
$
1,460

Interest cost
7,678

 
7,770

 
15,335

 
15,579

Expected return on plan assets
(14,132
)
 
(14,672
)
 
(28,221
)
 
(29,429
)
Amortization of transition obligation
23

 
22

 
46

 
45

Amortization of prior service (credit) cost
(41
)
 
(113
)
 
132

 
(226
)
Recognition of actuarial losses
1,718

 
2,088

 
3,428

 
4,200

Net periodic pension income
$
(4,348
)
 
$
(4,178
)
 
$
(8,470
)
 
$
(8,371
)

The table below summarizes the components of net periodic other postretirement benefit cost:
 
Three Months Ended December 31,
 
Six Months Ended December 31,
(in thousands)
2017
 
2016
 
2017
 
2016
Interest cost
$
157

 
$
168

 
$
314

 
$
337

Amortization of prior service credit
(6
)
 
(6
)
 
(11
)
 
(11
)
Recognition of actuarial loss
70

 
89

 
140

 
177

Net periodic other postretirement benefit cost
$
221

 
$
251

 
$
443

 
$
503