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EMPLOYEE BENEFIT PLANS (Tables)
 9 Months Ended
Sep. 30, 2018
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
 
Nine months ended
 
September 30,
 
September 30,
 
2018
 
2017
 
2018
 
2017
Service cost
$
169

 
$
129

 
$
447

 
$
482

Interest cost
1,056

 
1,197

 
3,237

 
3,531

Expected return on assets
(1,487
)
 
(1,372
)
 
(4,470
)
 
(4,109
)
Amortization of unrecognized prior service cost
50

 
34

 
150

 
102

Amortization of net unrecognized loss
682

 
663

 
2,048

 
1,992

      Net periodic pension cost
$
470

 
$
651

 
$
1,412

 
$
1,998