XML 96 R38.htm IDEA: XBRL DOCUMENT v3.19.3
Pension Benefits and Other Postretirement Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2019
Defined Benefit Plan [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic (benefit) cost for the periods indicated were:
 
Pension Benefits
 
Retirement Health and Life Insurance Benefits
(Dollars in thousands)
Three Months Ended
 
Nine Months Ended
 
Three Months Ended
 
Nine Months Ended
September 30,
 
September 30,
 
September 30,
 
September 30,
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
Service cost
$
—

 
$
—

 
$
—

 
$
—

 
$
12

 
$
17

 
$
48

 
$
55

Interest cost
1,790

 
1,692

 
5,359

 
5,064

 
14

 
16

 
44

 
47

Expected return of plan assets
(2,187
)
 
(2,164
)
 
(6,571
)
 
(6,497
)
 
—

 
—

 
—

 
—

Amortization of prior service credit
—

 
—

 
—

 
—

 
(252
)
 
(400
)
 
(758
)
 
(1,201
)
Amortization of net loss
476

 
457

 
1,386

 
1,370

 
—

 
—

 
—

 
—

Net periodic cost (benefit)
$
79

 
$
(15
)
 
$
174

 
$
(63
)
 
$
(226
)
 
$
(367
)

$
(666
)
 
$
(1,099
)