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Pension Plan (Tables)
6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]

 

Three months ended
June 30

 

Six months ended
June 30

In thousands

2019

 

2018

 

2019

 

2018

Interest cost

$

126

 

$

114

 

$

251

 

$

227

Expected return on plan assets

 

(173)

   

(203)

   

(345)

   

(406)

Amortization of net actuarial loss

 

66

 

 

56

 

 

131

 

 

112

Net periodic pension expense (benefit)

$

19

 

$

(33)

 

$

37

 

$

(67)