DEBT - Schedule of Maturities for Outstanding Debt (Details) $ in Thousands	Aug. 17, 2017 extension_option	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
April 1, 2018 through December 31, 2018		$ 3,228
2019		102,930
2020		204,578
2021		1,131,044
2022		1,001,197
Thereafter		922,595
Total Debt		3,365,572
Premium, net		15,568
Deferred financing costs, net		(20,034)
Total Debt, Net		3,361,106
Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Number of extension options | extension_option	2
Extension period	6 months
Secured Indebtedness
Debt Instrument [Line Items]
April 1, 2018 through December 31, 2018		3,228
2019		102,930
2020		4,578
2021		20,044
2022		4,285
Thereafter		122,595
Total Debt		257,660
Premium, net		0
Deferred financing costs, net		(2,743)	$ (2,800)
Total Debt, Net		254,917
Revolving Credit Facility
Debt Instrument [Line Items]
April 1, 2018 through December 31, 2018		0
2019		0
2020		0
2021		611,000
2022		0
Thereafter		0
Total Debt		611,000
Premium, net		0
Deferred financing costs, net		0
Total Debt, Net		611,000
Term Loans
Debt Instrument [Line Items]
April 1, 2018 through December 31, 2018		0
2019		0
2020		200,000
2021		0
2022		996,912
Thereafter		0
Total Debt		1,196,912
Premium, net		0
Deferred financing costs, net		(8,289)
Total Debt, Net		1,188,623
Senior Notes
Debt Instrument [Line Items]
April 1, 2018 through December 31, 2018		0
2019		0
2020		0
2021		500,000
2022		0
Thereafter		800,000
Total Debt		1,300,000
Premium, net		15,568	15,900
Deferred financing costs, net		(9,002)	$ (9,600)
Total Debt, Net		$ 1,306,566