CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net income	$ 26,805	$ 13,646
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of NuStar Energy L.P.	(27,522)	(14,390)
Distributions of equity in earnings from NuStar Energy L.P.	23,968	14,390
Gain on sale of NuStar Energy L.P. limited partner units in connection with unit-based compensation	(462)	(17)
Provision (benefit) for deferred income tax	14	(334)
Changes in current assets and liabilities (Note 6)	(501)	(2,335)
(Increase) decrease in long-term receivable from related party	(1,956)	1,278
Increase in long-term liabilities	1,957	1,838
Other, net	92	77
Net cash provided by operating activities	22,395	14,153
Cash Flows from Investing Activities:
Distributions in excess of equity in earnings from NuStar Energy L.P.	0	9,570
Investment in NuStar Energy L.P.	(1,823)	(1,363)
Proceeds from sale of NuStar Energy L.P. units in connection with unit-based compensation	1,201	463
Net cash (used in) provided by investing activities	(622)	8,670
Cash Flows from Financing Activities:
Distributions to unitholders	(23,403)	(23,249)
Other, net	15	0
Net cash used in financing activities	(23,388)	(23,249)
Net decrease in cash and cash equivalents	(1,615)	(426)
Cash and cash equivalents as of the beginning of the period	2,840	1,603
Cash and cash equivalents as of the end of the period	$ 1,225	$ 1,177