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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit Plans

The following are components of the net periodic benefit cost for the pension and postretirement benefit plans maintained by the Company for the three and six months ended June 30, 2019 and 2018:
 
Pension Benefits
(in thousands)
Three months ended June 30,
 
Six months ended June 30,
2019
 
2018
 
2019
 
2018
Interest cost
$
29

 
$
32

 
$
58

 
$
65

Recognized net actuarial loss
58

 
61

 
116

 
122

Benefit cost
$
87

 
$
93

 
$
174

 
$
187


 
Postretirement Benefits
(in thousands)
Three months ended June 30,
 
Six months ended June 30,
2019
 
2018
 
2019
 
2018
Service cost
$
64

 
$
75

 
$
138

 
$
162

Interest cost
221

 
190

 
427

 
377

Amortization of prior service cost
(228
)
 
(228
)
 
(456
)
 
(456
)
Benefit cost
$
57

 
$
37

 
$
109

 
$
83