SERIES A CUMULATIVE REDEEMABLE PREFERRED UNITS - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Jun. 12, 2019	Nov. 09, 2018	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Recapitalization transaction (Note 2)		$ 628,154		$ 0	$ 628,154	$ 0
Preferred Units, redemption terms, internal rate of return				11.50%
Preferred Unit limited partners
Class of Stock [Line Items]
Number of Preferred Units sold (in shares)	625,000
Preferred Units sold, price per share (in USD per share)	$ 1,000
Transaction price, gross	$ 625,000
Recapitalization transaction (Note 2)	611,249
Preferred Units, quarterly distribution rate per annum			7.00%
Increase in preferred unit distribution rate, after fifth anniversary				10.00%
Preferred Units, redemption terms, internal rate of return				11.50%
Preferred Units, redemption terms, internal rate of return after fifth anniversary of closing				13.75%
Preferred Units, redemption terms, multiple of invested capital				1.3
Preferred Units, exchangeable, number of preceding trading days				20 days
Preferred Units, exchangeable, discount percentage				6.00%
Maximum amount of distributions to common unit holders	$ 650,000
Preferred Units, exchangeable, minimum percentage of Company's outstanding voting power				20.00%
Preferred Units, exchangeable, minimum percentage of Company's outstanding voting power required approval				19.50%