RESTRUCTURING COSTS AND ACCRUALS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year			$ 2,343
Restructuring Charges	$ 0	$ 0	539	$ (165)
Revisions of estimated liabilities			539
Accretion			166
Cash payments			(1,052)
Foreign exchange impact on ending balance			(55)
Accrual balance at end of period	1,941		1,941
Facilities-related accruals - non-current	901		901		$ 1,334
Non-Acquisition-Related [Member] | Employee Severance [Member]
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year			58
Revisions of estimated liabilities			0
Accretion			0
Cash payments			(58)
Foreign exchange impact on ending balance			0
Accrual balance at end of period	0		0
Non-Acquisition-Related [Member] | Facilities-Related [Member]
Restructuring accrual [Roll Forward]
Accrual balance at beginning of year			2,285
Revisions of estimated liabilities			539
Accretion			166
Cash payments			(994)
Foreign exchange impact on ending balance			(55)
Accrual balance at end of period	1,941		1,941
Facilities-Related [Member]
Restructuring accrual [Roll Forward]
Facilities-related accruals - current	1,000		1,000
Facilities-related accruals - non-current	900		900
Facilities-Related [Member] | Restructuring Plan 2008 [Member]
Restructuring accrual [Roll Forward]
Facilities-related accruals - current	$ 1,900		$ 1,900