RESTRUCTURING AND OTHER EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		35 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015
Restructuring Reserve [Roll Forward]
Expenses	$ 3,463	$ 4,592
Phase II
Restructuring Reserve [Roll Forward]
Beginning balance	3,342
Expenses	1,033	3,900	17,300
Cash payments	(3,230)
Ending balance	1,145		1,145
Phase II | Employee Severance
Restructuring Reserve [Roll Forward]
Beginning balance	1,385
Expenses	9	1,000	5,600
Cash payments	(623)
Ending balance	771		771
Phase II | Consulting
Restructuring Reserve [Roll Forward]
Beginning balance	481
Expenses	111		8,200
Cash payments	(481)
Ending balance	111		111
Phase II | Other restructuring costs
Restructuring Reserve [Roll Forward]
Beginning balance	1,476
Expenses	913		3,600
Cash payments	(2,126)
Ending balance	$ 263		$ 263