RESTRUCTURING CHARGES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Beginning balance			$ 9,200	$ 5,100	$ 5,100
Restructuring charges	$ 0	$ 3,265	656	11,207	15,000
Cash Payments			(8,500)		(10,900)
Ending balance	1,400		1,400		9,200	$ 5,100
ROVA Contract
Restructuring Reserve [Roll Forward]
Beginning balance			400	5,100	5,100
Restructuring charges			0		500
Cash Payments			(400)		(5,200)
Ending balance	0		0		400	$ 5,100
Remaining period of contract						5 years
Restructuring charges incurred	5,500		5,500
Acquisition Restructuring Plans
Restructuring Reserve [Roll Forward]
Beginning balance			8,800	$ 0	0
Restructuring charges			700		14,500
Cash Payments			(8,100)		(5,700)
Ending balance	1,400		1,400		$ 8,800	$ 0
Restructuring charges expected	$ 15,200		$ 15,200