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PARTNERS' EQUITY Table 4 (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Distributions Made to Limited Partners and General Partner [Line Items]                      
General partner interest                 $ 7,844 $ 7,844 $ 7,844
General partner incentive distribution                 43,220 43,220 43,220
Total general partner distributions                 51,064 51,064 51,064
Limited partners' distribution                 341,140 341,140 341,140
Total cash distributions $ 98,051 $ 98,051 $ 98,051 $ 98,051         $ 392,204 $ 392,204 $ 392,204
Cash distributions per unit applicable to limited partners $ 1.095 $ 1.095 $ 1.095 $ 1.095 $ 1.095 $ 1.095 $ 1.095 $ 1.095 $ 4.380 $ 4.38 $ 4.38