SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 29, 2020	Apr. 30, 2020	Feb. 07, 2020	Jul. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
5.375 % Senior Notes due 2027
Subsequent Event [Line Items]
Long term debt gross					$ 485,938	$ 500,000
5.375 % Senior Notes due 2027 | Senior Notes
Subsequent Event [Line Items]
Debt repurchased					14,100
Long term debt gross					$ 485,900
5.375 % Senior Notes due 2027 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Debt repurchased				$ 6,000
Discount rate				98.50%
Long term debt gross				$ 479,900
Cash Distribution
Subsequent Event [Line Items]
Cash distributions, amount per common unit (in USD per unit)		$ 0.10	$ 0.45
Cash Distribution | Subsequent Event
Subsequent Event [Line Items]
Cash distributions, amount per common unit (in USD per unit)	$ 0.03