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EMPLOYEE BENEFIT PLANS (Tables)
 9 Months Ended
Sep. 30, 2017
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,
 
2017
 
2016
 
2017
 
2016
Service cost
$
129

 
$
74

 
$
482

 
$
386

Interest cost
1,197

 
1,230

 
3,531

 
3,700

Expected return on assets
(1,372
)
 
(1,396
)
 
(4,109
)
 
(4,184
)
Amortization of unrecognized prior service cost
34

 
35

 
102

 
103

Amortization of net unrecognized loss
663

 
762

 
1,992

 
2,289

      Net periodic pension cost
$
651

 
$
705

 
$
1,998

 
$
2,294