Employee Benefit Plan (Tables)
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Schedule of net periodic benefit cost and other comprehensive income
Components of Net Periodic Benefit Cost

 
Pension Benefits
Three Months Ended
 
Life and Health
Three Months Ended
 
SERP Benefits
Three Months Ended
(In thousands)
6/30/2019

 
6/30/2018

 
6/30/2019

 
6/30/2018

 
6/30/2019

 
6/30/2018

Service cost
$
0

 
$
0

 
$
30

 
$
53

 
$
39

 
$
35

Interest cost
723

 
663

 
72

 
71

 
228

 
211

Expected return on plan assets
(1,232
)
 
(1,406
)
 
0

 
0

 
0

 
0

Amortization of net retirement plan actuarial loss
330

 
292

 
0

 
16

 
70

 
135

Amortization of net retirement plan prior service (credit) cost
(3
)
 
(3
)
 
(15
)
 
(15
)
 
22

 
22

Net periodic benefit (income) cost
$
(182
)
 
$
(454
)
 
$
87

 
$
125

 
$
359

 
$
403


 
Pension Benefits Six Months Ended
 
Life and Health Six Months Ended
 
SERP Benefits Six Months Ended
(In thousands)
6/30/2019

 
6/30/2018

 
6/30/2019

 
6/30/2018

 
6/30/2019

 
6/30/2018

Service cost
$
0

 
$
0

 
$
80

 
$
106

 
$
77

 
$
80

Interest cost
1,468

 
1,254

 
145

 
135

 
456

 
417

Expected return on plan assets
(2,466
)
 
(2,824
)
 
0

 
0

 
0

 
0

Amortization of net retirement plan actuarial loss
667

 
559

 
0

 
31

 
154

 
270

Amortization of net retirement plan prior service cost (credit)
(5
)
 
(5
)
 
(31
)
 
(31
)
 
44

 
44

Net periodic benefit (income) cost
$
(336
)
 
$
(1,016
)
 
$
194

 
$
241

 
$
731

 
$
811