EMPLOYEE BENEFIT PLANS - Future benefit payments for the pension benefit plans (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
U.S. defined benefit pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2014	$ 12,629
2015	19,434
2016	19,142
2017	19,277
2018	18,398
2019-2023	88,639
Non-U.S. defined benefit pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2014	6,461
2015	4,986
2016	4,741
2017	4,745
2018	4,971
2019-2023	35,921
U.S. postretirement benefit plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2014	7,358
2015	6,800
2016	6,284
2017	5,738
2018	5,256
2019-2023	$ 20,361