NET INCOME (LOSS) PER UNIT

3 Months Ended

Mar. 31, 2013

NET INCOME (LOSS) PER UNIT [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. Unit amounts used in the computation of basic and diluted net income per unit were as follows:

	Three Months Ended March 31,
	2013	2012
Basic units outstanding:
Weighted-average number of basic units outstanding	42,605,668	42,574,419
Diluted units outstanding:
Weighted-average number of basic units outstanding	42,605,668	42,574,419
Effect of dilutive securities	—	23,222
Weighted-average number of diluted units outstanding	42,605,668	42,597,641