NET INCOME PER UNIT

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

NET INCOME (LOSS) PER UNIT

NET INCOME PER UNIT

We treat restricted units granted under our long-term incentive plan as participating securities in computing net income per unit pursuant to the two-class method. The computation of diluted net income per unit for the three months ended March 31, 2014 excludes outstanding options to purchase NuStar GP Holdings units, as the exercise price exceeded the average market price and their effect would have been anti-dilutive. The outstanding options to purchase NuStar GP Holdings units totaled 289,100 as of March 31, 2014.