RESTRUCTURING COSTS AND ACCRUALS (Details) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended					3 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013 employee related [Member] Divestiture-Related [Member] Restructuring Plan 2012 [Member]	Dec. 31, 2012 Employee Severance [Member] Divestiture-Related [Member] Restructuring Plan 2012 [Member]	Sep. 30, 2013 Employee Severance [Member] Non-Acquisition-Related [Member] Restructuring Plan 2013 [Member]	Sep. 30, 2013 Employee Severance [Member] Acquisition-Related [Member]	Sep. 30, 2013 Non-Acquisition-Related [Member] Employee Severance [Member]	Sep. 30, 2013 Non-Acquisition-Related [Member] Facilities-Related [Member]	Sep. 30, 2013 Facilities-Related [Member]	Mar. 31, 2013 Facilities-Related [Member] Divestiture-Related [Member] Restructuring Plan 2012 [Member]	Dec. 31, 2012 Facilities-Related [Member] Divestiture-Related [Member] Restructuring Plan 2012 [Member] facility	Dec. 31, 2012 Facilities-Related [Member] Non-Acquisition-Related [Member] Restructuring Plan 2012 [Member]	Dec. 31, 2012 Facilities-Related [Member] Non-Acquisition-Related [Member] Restructuring Plan 2012 [Member]	Sep. 30, 2013 Facilities-Related [Member] Acquisition-Related [Member]
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated						280		31
Severance Costs							$ 13,900,000	$ 1,400,000
Severance costs		1,511,000						1,511,000	0		0						0
Restructuring costs, closure of facilities													1,000,000	8,600,000
Number of facilities closed														1
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year		15,733,000		15,733,000					0	4,299,000	10,839,000						595,000
Restructuring Charges	688,000	2,879,000
Revisions of estimated liabilities		1,368,000							0	57,000	1,483,000						(172,000)
Accretion		437,000							0	0	411,000						26,000
Cash payments for employee-related charges		(10,671,000)		(13,200,000)					0	(4,933,000)	(5,397,000)						(341,000)
Non-cash write-offs																1,400,000
Foreign exchange impact on ending balance		(91,000)							0	(33,000)	(58,000)						0
Accrual balance at end of period	8,287,000	8,287,000							0	901,000	7,278,000						108,000
Facilities-related accruals - current												4,900,000
Facilities-related accruals - non-current	2,461,000	2,461,000			5,119,000							2,500,000
Deferred Rent Liability Write-Off															1,000,000
Restructuring Plan, Estimate Revision		$ 400,000	$ 3,000,000