LONG-TERM DEBT (Details) (USD $)	0 Months Ended				3 Months Ended		9 Months Ended
	Aug. 01, 2014	Dec. 09, 2013	May 07, 2013	Nov. 27, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Aug. 01, 2014	Dec. 31, 2013
Debt
Senior secured term loan					$ 593,029,000		$ 593,029,000			$ 396,503,000
Less: unamortized discount, net					(3,056,000)		(3,056,000)			(1,247,000)
Net long-term debt					589,973,000		589,973,000			395,256,000
Less: current portion					(5,945,000)		(5,945,000)			(3,975,000)
Long-term debt, less current portion					584,028,000		584,028,000			391,281,000
Proceeds from issuance of long-term debt							198,000,000	201,000,000
Debt issuance costs, net					8,451,000		8,451,000			6,687,000	[1]
Interest on long-term debt					6,480,000	6,188,000	16,040,000	14,302,000
Senior secured term loan
Debt
Less: unamortized discount, net				(2,000,000)					(2,000,000)
Amount borrowed			200,000,000	200,000,000					200,000,000
Proceeds from issuance of long-term debt	198,000,000		201,000,000	198,000,000
Original issue premium			1,000,000
Additional increase in debt			200,000,000						200,000,000
Amount of long-term debt refinanced		397,500,000
Maximum restricted junior payments									200,000,000.0
Aggregate amount of each consecutive quarterly scheduled principal installment	1,500,000
Term of senior secured loan agreement	7 years
Mandatory prepayments owed							0
Interest rate at the end of the period (as a percent)					4.50%		4.50%
Debt issuance costs, net					8,500,000		8,500,000			6,700,000
Accumulated amortization					1,800,000		1,800,000			1,000,000
Interest on long-term debt					6,500,000	6,200,000	16,000,000	14,300,000
Senior secured term loan | Maximum
Debt
Leverage ratio to be maintained under the credit facility covenants							3.0
Number of days within which the entity fails to pay principal when due or interest or any other amount owing on any other obligation under the credit agreement, is considered as event of default							5 days
Amount of principal or interest if failed to pay considered as event of default							40,000,000
Amount of debt which results in acceleration of debt if failed to pay considered as event of default							40,000,000
Amount of unbonded, undischarged or unstayed debt under entry by court of one or more judgments for certain period to determine as event of default							$ 40,000,000
Senior secured term loan | Adjusted Eurodollar Rate
Debt
Reference rate							Adjusted Eurodollar Rate
Fixed interest rate base (as a percent)							1.00%
Interest rate margin (as a percent)							3.50%
Senior secured term loan | Base Rate
Debt
Reference rate							Base Rate
Fixed interest rate base (as a percent)							2.00%
Interest rate margin (as a percent)							2.50%

[1] December 31, 2013 security deposits, net and other assets have been revised to reflect a purchase accounting measurement period adjustment related to the Equator acquisition. See Note 3.