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EMPLOYEE BENEFIT PLANS (Tables)
 6 Months Ended
Jun. 30, 2017
Compensation and Retirement Disclosure [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,
 
2017
 
2016
 
2017
 
2016
Service cost
$
128

 
$
206

 
$
353

 
$
312

Interest cost
1,163

 
1,233

 
2,334

 
2,470

Expected return on assets
(1,368
)
 
(1,395
)
 
(2,737
)
 
(2,788
)
Amortization of unrecognized prior service cost
34

 
34

 
68

 
68

Amortization of net unrecognized loss
655

 
762

 
1,329

 
1,527

      Net periodic pension cost
$
612

 
$
840

 
$
1,347

 
$
1,589