RESTRUCTURING CHARGES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Beginning balance			$ 900	$ 9,200	$ 900	$ 9,200	$ 900	$ 9,200
Restructuring charges	$ 0	$ 103	0	656	0	656	0	656	$ 14,989
Cash Payments							(900)	(9,000)
Ending balance							0	900	9,200
ROVA Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			0	400	0	400	0	400
Restructuring charges							0	0
Cash Payments							0	(400)
Ending balance							0	0	400
Acquisition Restructuring Plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs expected							15,200
Restructuring Reserve [Roll Forward]
Beginning balance			$ 900	$ 8,800	$ 900	$ 8,800	900	8,800
Restructuring charges							0	700
Cash Payments							(900)	(8,600)
Ending balance							$ 0	$ 900	$ 8,800