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PARTNERS' EQUITY Table 3 (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Distributions Made to Limited Partners and General Partner [Line Items]        
General partner interest $ 1,782 $ 1,627 $ 3,564 $ 3,219
General partner incentive distribution 9,816 8,963 19,632 17,531
Total general partner distribution 11,598 10,590 23,196 20,750
Limited partners' distribution 77,478 70,749 154,956 140,205
Total cash distributions $ 89,076 $ 81,339 $ 178,152 $ 160,955
Cash distributions per unit applicable to limited partners $ 1.095 $ 1.095 $ 2.190 $ 2.170