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RETIREMENT PLANS (Tables)
6 Months Ended
Jun. 30, 2019
RETIREMENT PLANS  
Schedule of components of the plan's net periodic pension cost The Company recorded the net periodic benefit cost identified below (in thousands):

Three months ended

    

June 30, 2019

    

June 30, 2018

Pension benefits

Postretirement benefits

Pension benefits

Postretirement benefits

Operating expense

Service cost

$

447

$

37

$

448

$

37

Non-operating expense

Interest cost

841

40

819

40

Expected return on plan assets

 

(1,263)

 

 

(1,208)

 

Actuarial gain/ loss

7

(17)

30

(17)

Net periodic pension expense

$

32

$

60

$

89

$

60

Six months ended

June 30, 2019

    

June 30, 2018

Pension benefits

Postretirement benefits

Pension benefits

Postretirement benefits

Operating expense

Service cost

$

895

$

74

$

897

$

74

Non-operating expense

Interest cost

1,682

80

1,639

80

Expected return on plan assets

 

(2,527)

 

 

(2,418)

 

Actuarial gain/ loss

15

(34)

61

(34)

Net periodic pension expense

$

65

$

120

$

179

$

120