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Pension (Tables)
 6 Months Ended
Jun. 30, 2018
Pension [Abstract]  
Net Pension Cost
The amount of net pension cost is shown in the table below:
 
For the Three Months Ended June 30
 
For the Six Months Ended June 30
(In thousands)
2018
2017
 
2018
2017
Service cost - benefits earned during the period
$
152

$
128

 
$
305

$
257

Interest cost on projected benefit obligation
951

973

 
1,901

1,946

Expected return on plan assets
(1,438
)
(1,438
)
 
(2,875
)
(2,876
)
Amortization of prior service cost
(67
)
(68
)
 
(135
)
(136
)
Amortization of unrecognized net loss
592

617

 
1,184

1,234

Net periodic pension cost
$
190

$
212

 
$
380

$
425