ACQUISITIONS AND REVISED INCENTIVE DISTRIBUTION RIGHTS (Details 2) (General Partner, USD $)	1 Months Ended			1 Months Ended		12 Months Ended	1 Months Ended		12 Months Ended	1 Months Ended
	Jul. 31, 2009 Old IDRs	Jul. 31, 2009 Revised IDRs	Jul. 02, 2009 North Baja Acquisition Revised IDRs	Jul. 31, 2009 $0.81 per common unit	Jul. 02, 2009 $0.81 per common unit	Dec. 31, 2011 $0.81 per common unit Revised IDRs	Jul. 31, 2009 $0.88 per common unit	Jul. 02, 2009 $0.88 per common unit	Dec. 31, 2011 $0.88 per common unit Revised IDRs	Jul. 31, 2009 $3.24 per common unit	Jul. 31, 2009 $3.52 per common unit
Cash Distributions
Units issued			3,762,000
Combined general partner interest and incentive distribution interest percentage of quarterly distributions of Available Cash exceeding target levels, threshold	50.00%	2.00%		25.00%		15.00%	50.00%		25.00%	25.00%	50.00%
Target level of quarterly distributions (in dollars per common unit)					$ 0.81	$ 0.81		$ 0.88	$ 0.88
Target level of quarterly distributions, annualized basis (in dollars per common unit)										$ 3.24	$ 3.52