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EMPLOYEE BENEFIT PLANS (Tables)
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
The components of net periodic pension cost consisted of the following for the periods set forth below (amounts in thousands):
 
Three months ended
 
Six months ended
 
June 30,
 
June 30,
 
2019
 
2018
 
2019
 
2018
Service cost
$
205

 
$
141

 
$
430

 
$
278

Interest cost
1,106

 
1,098

 
2,229

 
2,181

Expected return on assets
(1,188
)
 
(1,491
)
 
(2,377
)
 
(2,983
)
Amortization of unrecognized prior service cost
57

 
50

 
113

 
100

Amortization of net unrecognized loss
765

 
690

 
1,530

 
1,366

      Net periodic pension cost
$
945

 
$
488

 
$
1,925

 
$
942