FAIR VALUE (TABLES)

12 Months Ended

Dec. 31, 2015

FAIR VALUE [Abstract]

Schedule of Fair Value Derivative Assets and Liabilities

The following is a summary of the Company’s fair value measurements for its net derivative assets (liabilities) as of December 31, 2015 and 2014 (in thousands):

As of December 31, 2015

	Fair Value Measurements Using
	Quoted Prices in		Significant
	Active Markets		Other		Significant
	for Identical		Observable		Unobservable
	Assets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		At Fair Value
Cash flow hedges	$	—	$	(45,722)	$	—	$	(45,722)
Interest rate swaps		—		(651)		—		(651)
Fair value hedges		—		2,373		—		2,373
Total net derivative asset (liability)	$	—	$	(44,000)	$	—	$	(44,000)

As of December 31, 2014

	Fair Value Measurements Using
	Quoted Prices in		Significant
	Active Markets		Other		Significant
	for Identical		Observable		Unobservable
	Assets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		At Fair Value
Cash flow hedges	$	—	$	(29,169)	$	—	$	(29,169)
Interest rate swaps		—		(1,440)		—		(1,440)
Fair value hedges		—		792		—		792
Total net derivative asset (liability)	$	—	$	(29,817)	$	—	$	(29,817)

Schedule of Fair Value Assets and Liabilities

The following is a summary of the Company’s fair value measurements as of December 31, 2015 and 2014 (in thousands):

As of December 31, 2015

	Fair Value Measurements Using
	Quoted Prices in				Significant
	Active Markets for		Significant Other		Unobservable
	Identical Assets		Observable Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)
Assets
Derivative instruments, net	$	—	$	—	$	—
Total assets	$	—	$	—	$	—
Liabilities
Deferred compensation plan liability	$	—	$	(9,821)	$	—
Derivative instruments, net		—		(44,000)		—
Contingent consideration		—		—		(13,450)
Total liabilities	$	—	$	(53,821)	$	(13,450)

As of December 31, 2014

	Fair Value Measurements Using
	Quoted Prices in				Significant
	Active Markets for		Significant Other		Unobservable
	Identical Assets		Observable Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)
Assets
Derivative instruments, net	$	—	$	—	$	—
Total assets	$	—	$	—	$	—
Liabilities
Deferred compensation plan liability	$	—	$	(8,478)	$	—
Derivative instruments, net		—		(29,817)		—
Contingent consideration		—		—		(24,744)
Total liabilities	$	—	$	(38,295)	$	(24,744)

Schedule of Business Acquisitions by Acquisition Contingent Consideration

A rollforward of the activity in the Company’s fair value of the contingent consideration is as follows (in thousands):

							Imputed
	December 31,						Interest /		December 31,
	2014		Acquisitions		Payments		Adjustments		2015
iKnowtion	$	2,265	$	—	$	(1,800)	$	35	$	500
Guidon		1,000		—		(1,000)		—		—
TSG		—		—		—		—		—
WebMetro		—		—		—		—		—
Sofica		6,317		—		(2,838)		(326)		3,153
rogenSi		15,162		—		(6,372)		1,007		9,797
Total	$	24,744	$	—	$	(12,010)	$	716	$	13,450

							Imputed
	December 31,						Interest /		December 31,
	2013		Acquisitions		Payments		Adjustments		2014
iKnowtion	$	3,470	$	—	$	(1,400)	$	195	$	2,265
Guidon		2,637		—		(1,426)		(211)		1,000
TSG		12,933		—		(5,292)		(7,641)		—
WebMetro		2,708		—		(1,026)		(1,682)		—
Sofica		—		3,830		—		2,487		6,317
rogenSi		—		14,543		—		619		15,162
Total	$	21,748	$	18,373	$	(9,144)	$	(6,233)	$	24,744