XML 43 R32.htm IDEA: XBRL DOCUMENT v3.10.0.1
Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Schedule of net periodic cost (benefit)
Net periodic cost (benefit) of the Defined Benefit Pension, Post-Retirement Medical, and Supplemental Executive Retirement plans included in general insurance expenses in the accompanying condensed consolidated statements of income includes the following components:
 
Three Months Ended September 30,
 
Defined Benefit 
Pension Plan
 
Post-Retirement 
Medical Plan
 
Supplemental Executive
Retirement Plan
 
Total
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
Components of net periodic cost (benefit):
 

 
 

 
 

 
 

 
 

 
 

 
 
 
 
Service cost
$
—

 
$
2,170

 
$
317

 
$
378

 
$
—

 
$
(4
)
 
$
317

 
$
2,544

Interest cost
5,736

 
6,114

 
183

 
192

 
339

 
405

 
6,258

 
6,711

Expected return on plan assets
(5,361
)
 
(4,980
)
 
—

 
—

 
—

 
—

 
(5,361
)
 
(4,980
)
Amortization of unrecognized prior service costs (benefits)
—

 
—

 
(5
)
 
(235
)
 
81

 
126

 
76

 
(109
)
Amortization of losses (gains) from earlier periods
625

 
2,241

 
(44
)
 
75

 
(11
)
 
(14
)
 
570

 
2,302

Net periodic cost (benefit)
$
1,000

 
$
5,545


$
451


$
410


$
409


$
513


$
1,860


$
6,468

 
Nine Months Ended September 30,
 
Defined Benefit 
Pension Plan
 
Post-Retirement 
Medical Plan
 
Supplemental Executive
Retirement Plan
 
Total
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
Components of net periodic cost (benefit):
 

 
 

 
 

 
 

 
 

 
 

 
 
 
 
Service cost
$
—

 
$
1,436

 
$
1,069

 
$
1,092

 
$
—

 
$
(12
)
 
$
1,069

 
$
2,516

Interest cost
17,155

 
18,356

 
527

 
568

 
1,018

 
1,215

 
18,700

 
20,139

Expected return on plan assets
(16,022
)
 
(15,216
)
 
—

 
—

 
—

 
—

 
(16,022
)
 
(15,216
)
Amortization of unrecognized prior service costs (benefits)
—

 
—

 
(15
)
 
(339
)
 
243

 
376

 
228

 
37

Amortization of losses (gains) from earlier periods
1,793

 
6,639

 
(182
)
 
(151
)
 
(34
)
 
(40
)
 
1,577

 
6,448

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net periodic cost (benefit)
$
2,926

 
$
11,215


$
1,399


$
1,170


$
1,227


$
1,539


$
5,552


$
13,924
Schedule of contributions to the Defined Benefit Pension Plan and payments made to the Post-Retirement Medical Plan and the Supplemental Executive Retirement Plan
The following table summarizes payments made to the Post-Retirement Medical Plan and the Supplemental Executive Retirement Plan:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2018
 
2017
 
2018
 
2017
Payments to the Post-Retirement Medical Plan
 
$
94

 
$
155

 
$
211

 
$
531

Payments to the Supplemental Executive Retirement Plan
 
590

 
834

 
1,789

 
2,502