DISTRIBUTIONS FROM NUSTAR ENERGY Table 2 (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				12 Months Ended
	Jan. 27, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
NuStar Energy [Member]
Distributions from NuStar Energy (dates and totals)
NuStar Energy's cash distributions per unit applicable to limited partners (distribution earned)		$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 4.38	$ 4.380	$ 4.380
NuStar Energy's total cash distributions (distribution earned)		$ 98,971	$ 98,809	$ 98,051	$ 98,051	$ 393,882	$ 392,204	$ 392,204
NuStar Energy's distribution date of record (distribution earned)		Feb. 08, 2017	Nov. 08, 2016	Aug. 09, 2016	May 09, 2016
NuStar Energy's distribution payment date (distribution earned)		Feb. 13, 2017	Nov. 14, 2016	Aug. 12, 2016	May 13, 2016
Subsequent Event [Member]
Distributions from NuStar Energy (dates and totals)
NuStar Energy's distribution announcement date (distribution earned)	Jan. 27, 2017