RESTRUCTURING CHARGES (Schedule Summarizing the Activity Related to the Accrual for Restructuring Charges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	$ 5,118
Charges (credits) - Employee termination costs, net of change in estimate	4,595	$ 13,882	$ 50,026
Ending - Restructuring Accrual	726	5,118
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	19,725	25,441	16,222
Charges (credits) - Employee termination costs, net of change in estimate	5,974	13,882	44,394
Non-cash - Other	(15,151)	321	(453)
Payments - Employee termination costs		(19,070)	(35,662)
Payments - Other			(682)
Foreign exchange (gain) loss	(1,936)	(207)	716
Ending - Restructuring Accrual	8,612	19,725	25,441
Non-cash charges (see discussion below)	(1,379)		(5,179)
Employee Severance [Member] | Q2'10 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	281	281	439
Charges (credits) - Employee termination costs, net of change in estimate	0	0	0
Non-cash - Other		0	0
Payments - Employee termination costs	0	0	(158)
Payments - Other			0
Foreign exchange (gain) loss	0	0	0
Ending - Restructuring Accrual	281	281	281
Non-cash charges (see discussion below)	0		0
Employee Severance [Member] | Quarter One 2015 [Domain]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	0
Charges (credits) - Employee termination costs, net of change in estimate	2,707
Payments - Employee termination costs	(2,705)
Foreign exchange (gain) loss	(3)
Ending - Restructuring Accrual	(1)	0
Non-cash charges (see discussion below)	0
Employee Severance [Member] | Q2'12 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	19	897	7,418
Charges (credits) - Employee termination costs, net of change in estimate	(210)	0	(13)
Non-cash - Other		0	0
Payments - Employee termination costs	213	(878)	(6,508)
Payments - Other			0
Foreign exchange (gain) loss	0	0	0
Ending - Restructuring Accrual	22	19	897
Non-cash charges (see discussion below)	0		0
Employee Severance [Member] | Q4'12 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual		0	8,365
Charges (credits) - Employee termination costs, net of change in estimate			(1,720)
Non-cash - Other			0
Payments - Employee termination costs			(6,400)
Payments - Other			(229)
Foreign exchange (gain) loss			(16)
Ending - Restructuring Accrual			0
Non-cash charges (see discussion below)			(68)
Employee Severance [Member] | Q1'13 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	3,988	22,949	0
Charges (credits) - Employee termination costs, net of change in estimate	(634)	(2,077)	44,084
Non-cash - Other		0	(453)
Payments - Employee termination costs	(1,524)	(16,773)	(21,873)
Payments - Other			(453)
Foreign exchange (gain) loss	226	(111)	738
Ending - Restructuring Accrual	2,056	3,988	22,949
Non-cash charges (see discussion below)	0		(5,111)
Employee Severance [Member] | Q3'13 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	9	1,314	0
Charges (credits) - Employee termination costs, net of change in estimate	(9)	(292)	2,043
Non-cash - Other		0	0
Payments - Employee termination costs	0	(1,018)	(723)
Payments - Other			0
Foreign exchange (gain) loss	0	5	(6)
Ending - Restructuring Accrual	0	9	1,314
Non-cash charges (see discussion below)	0		0
Employee Severance [Member] | Q3'14 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	920	0
Charges (credits) - Employee termination costs, net of change in estimate	2,389	1,397
Non-cash - Other		321
Payments - Employee termination costs	(3,249)	(55)
Foreign exchange (gain) loss	(60)	(101)
Ending - Restructuring Accrual	0	920	0
Non-cash charges (see discussion below)	(471)
Employee Severance [Member] | Q4'14 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	14,508	0
Charges (credits) - Employee termination costs, net of change in estimate	788	14,854
Non-cash - Other		0
Payments - Employee termination costs	(7,234)	(346)
Foreign exchange (gain) loss	(2,041)	0
Ending - Restructuring Accrual	6,021	14,508	$ 0
Non-cash charges (see discussion below)	(720)
Employee Severance [Member] | Quarter Two 2015 [Domain]
Restructuring Cost and Reserve [Line Items]
Beginning - Restructuring Accrual	0
Charges (credits) - Employee termination costs, net of change in estimate	943
Payments - Employee termination costs	(652)
Foreign exchange (gain) loss	(58)
Ending - Restructuring Accrual	233	$ 0
Non-cash charges (see discussion below)	$ (188)