INVESTMENT IN NUSTAR ENERGY Table 3 (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Reconcilliation of NuStar Energy’s total partners’ equity to our investment in NuStar Energy
NuStar GP Holdings’ ownership interest in NuStar Energy	15.00%
NuStar GP Holdings’ share of NuStar Energy’s partners’ equity	$ 232,090	$ 239,867
Step-up in basis related to NuStar Energy’s assets and liabilities, including equity method goodwill, and other	64,928	66,827
Investment in NuStar Energy	297,018	306,694
NuStar Energy [Member]
Reconcilliation of NuStar Energy’s total partners’ equity to our investment in NuStar Energy
NuStar Energy’s partners’ equity	$ 1,557,652	$ 1,609,844
NuStar GP Holdings’ ownership interest in NuStar Energy	14.90%	14.90%