CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Equity in earnings of NuStar Energy L.P.	$ 18,194	$ 17,770	$ 62,284	$ 48,899
General and administrative expenses	(825)	(877)	(2,697)	(2,629)
Other (expense) income, net	(3)	354	536	567
Interest expense, net	(234)	(216)	(661)	(669)
Income before income tax (expense) benefit	17,132	17,031	59,462	46,168
Income tax (expense) benefit	(215)	608	(213)	885
Net income	16,917	17,639	59,249	47,053
Comprehensive income	$ 12,762	$ 16,669	$ 56,136	$ 45,153
Basic net income per unit	$ 0.39	$ 0.41	$ 1.38	$ 1.10
Diluted net income per unit	$ 0.39	$ 0.41	$ 1.38	$ 1.10
Weighted-average number of basic units outstanding	42,913,969	42,702,185	42,913,675	42,672,383
Weighted-average number of diluted units outstanding	42,913,969	42,757,393	42,913,675	42,700,860