CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Equity in earnings of NuStar Energy L.P.	$ 17,770	$ 13,462	$ 48,899	$ 39,023
General and administrative expenses	(877)	(941)	(2,629)	(2,359)
Other income (expense), net	354	(9)	567	90
Interest expense, net	(216)	(191)	(669)	(534)
Income before income tax benefit (expense)	17,031	12,321	46,168	36,220
Income tax benefit (expense)	608	(286)	885	(551)
Net income	17,639	12,035	47,053	35,669
Comprehensive income	$ 16,669	$ 14,501	$ 45,153	$ 38,421
Basic net income per unit	$ 0.41	$ 0.29	$ 1.10	$ 0.84
Diluted net income per unit	$ 0.41	$ 0.29	$ 1.10	$ 0.84
Weighted-average number of basic units outstanding	42,702,185	42,624,518	42,672,383	42,616,256
Weighted-average number of diluted units outstanding	42,757,393	42,624,518	42,700,860	42,616,256