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EMPLOYEE BENEFIT PLANS
 9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Disclosure [Text Block] EMPLOYEE BENEFIT PLANS
The Company has three frozen defined benefit pension plans covering certain employees or former employees of three U.S. subsidiaries. The Company also has pension plans covering certain employees of several foreign subsidiaries. The Company also sponsors a number of defined contribution plans in the U.S. and at foreign subsidiaries. The Company contributed approximately $2.1 million to the pension plans during the nine months ended September 30, 2017, and expects to contribute approximately $1.2 million to the pension plans during the remainder of 2017.
 
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