RESTRUCTURING AND OTHER SPECIAL CHARGES - Restructuring Accrual Roll Forward (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Expense	$ 2,780	$ 0	$ 28,787	$ 0
Restructuring February 2015 Plan
Restructuring Reserve [Roll Forward]
Accrual at December 31, 2014			0
Expense			28,787
Cash Payments			(14,942)
Non-Cash Utilization			(4,226)
Accrual at September 30, 2015	9,619		9,619
Restructuring February 2015 Plan | Workforce reduction
Restructuring Reserve [Roll Forward]
Accrual at December 31, 2014			0
Expense			18,927
Cash Payments			(13,636)
Non-Cash Utilization			0
Accrual at September 30, 2015	5,291		5,291
Restructuring February 2015 Plan | Consolidation of office facilities
Restructuring Reserve [Roll Forward]
Accrual at December 31, 2014			0
Expense			4,286
Cash Payments			(866)
Non-Cash Utilization			0
Accrual at September 30, 2015	3,420		3,420
Restructuring February 2015 Plan | Impairment of assets
Restructuring Reserve [Roll Forward]
Accrual at December 31, 2014			0
Expense			4,226
Cash Payments			0
Non-Cash Utilization			(4,226)
Accrual at September 30, 2015	0		0
Restructuring February 2015 Plan | Other costs and professional fees
Restructuring Reserve [Roll Forward]
Accrual at December 31, 2014			0
Expense			1,348
Cash Payments			(440)
Non-Cash Utilization			0
Accrual at September 30, 2015	$ 908		$ 908