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Pension, Savings, And Other Employee Benefits (Tables)
 6 Months Ended
Jun. 30, 2020
Retirement Benefits, Description [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
The components of net periodic benefit cost for the three months ended June 30 are as follows:

 
 
Pension Benefits
 
Other Benefits
(Dollars in thousands)
 
2020
 
2019
 
2020
 
2019
Components of net periodic benefit cost
 
 
 
 
 
 
 
 
Service cost
 
$
8

 
$
8

 
$
24

 
$
24

Interest cost
 
5,910

 
7,575

 
307

 
351

Expected return on plan assets
 
(6,169
)
 
(9,173
)
 
(311
)
 
(269
)
Amortization of unrecognized:
 
 
 
 
 
 
 
 
Prior service cost/(credit)
 
—

 
—

 
8

 
—

Actuarial (gain)/loss
 
3,224

 
2,435

 
(79
)
 
(117
)
Net periodic benefit cost/(credit)
 
$
2,973

 
$
845

 
$
(51
)
 
$
(11
)








The components of net periodic benefit cost for the six months ended June 30 are as follows:

 
 
Pension Benefits
 
Other Benefits
(Dollars in thousands)
 
2020
 
2019
 
2020
 
2019
Components of net periodic benefit cost
 
 
 
 
 
 
 
 
Service cost
 
$
16

 
$
16

 
$
49

 
$
48

Interest cost
 
11,819

 
15,150

 
611

 
702

Expected return on plan assets
 
(12,337
)
 
(18,346
)
 
(622
)
 
(538
)
Amortization of unrecognized:
 
 
 
 
 
 
 
 
Prior service cost/(credit)
 
—

 
—

 
16

 
—

Actuarial (gain)/loss
 
6,448

 
4,870

 
(154
)
 
(234
)
Net periodic benefit cost/(credit)
 
$
5,946

 
$
1,690

 
$
(100
)
 
$
(22
)