CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME
Equity in (loss) earnings of NuStar Energy L.P.	$ (6,741)	$ (4,578)	$ 65,783
General and administrative expenses	(3,105)	(3,337)	(3,298)
Other income, net	382	9,801	7,320
Interest expense, net	(778)	(624)	(570)
Income (loss) before income tax benefit (expense)	(10,242)	1,262	69,235
Income tax benefit (expense)	(792)	866	401
Net income (loss)	(11,034)	2,128	69,636
Other comprehensive (loss) income:
Share of NuStar Energy L.P.’s other comprehensive (loss) income	(674)	(4,297)	(12,580)
Pension and other postretirement benefit plan adjustments:
Net unrecognized (loss) gain arising during the year, net of income tax benefit (expense)	39,596	(6,574)	(11,094)
Net loss reclassified into income	2,041	1,514	538
Pension and other postretirement benefit plan adjustments	41,637	(5,060)	(10,556)
Total other comprehensive (loss) income	40,963	(9,357)	(23,136)
Comprehensive (loss) income	$ 29,929	$ (7,229)	$ 46,500
Basic net income (loss) per unit	$ (0.26)	$ 0.05	$ 1.64
Diluted net income (loss) per unit	$ (0.26)	$ 0.05	$ 1.64
Weighted-average number of basic units outstanding	42,619,722	42,576,858	42,546,096
Weighted-average number of diluted units outstanding	42,619,722	42,584,667	42,572,617