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EMPLOYEE BENEFIT PLANS
 9 Months Ended
Sep. 30, 2015
EMPLOYEE BENEFIT PLANS [Abstract]  
Compensation and Retirement Disclosure [Abstract]
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 $3.2 million to the pension plans during the nine months ended September 30, 2015 and expects to contribute approximately $1.4 million to the pension plans during the remainder of 2015.
 
The components of net periodic pension cost consisted of the following (amounts in thousands):
 
Three months ended
 
Nine months ended
 
September 30,
 
September 30,
 
2015
 
2014
 
2015
 
2014
Service cost
$
83

 
$
199

 
$
326

 
$
601

Interest cost
1,167

 
1,392

 
3,601

 
4,239

Expected return on assets
(1,512
)
 
(1,502
)
 
(4,549
)
 
(4,505
)
Amortization of unrecognized prior service cost
34

 
34

 
103

 
102

Amortization of net unrecognized loss
729

 
759

 
2,187

 
2,275

      Net periodic pension cost
$
501

 
$
882

 
$
1,668

 
$
2,712