Earnings Per Unit ("EPU") (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Unit [Line Items]
Interest in net income	$ 5,897	$ 12,996	$ 5,720	$ 21,970
General Partner [Member]
Earnings Per Unit [Line Items]
Interest in net income	118	260	114	439
Common Unitholders [Member]
Earnings Per Unit [Line Items]
Interest in net income	3,199	7,041	3,102	11,900
Weighted average units used to compute basic EPU	15,371	15,329	15,358	15,317
Effect of dilutive securities - LTIP awards	8	2	5	8
Weighted average units used to compute diluted EPU	15,379	15,331	15,363	15,325
Net income per limited partner unit, basic	0.21	0.46	0.20	0.78
Net income per limited partner unit, diluted	0.21	0.46	0.20	0.78
Subordinated Unitholders[Member]
Earnings Per Unit [Line Items]
Interest in net income	$ 2,580	$ 5,695	$ 2,504	$ 9,631
Weighted average units used to compute basic EPU	12,397	12,397	12,397	12,397
Weighted average units used to compute diluted EPU	12,397	12,397	12,397	12,397
Net income per limited partner unit, basic	0.21	0.46	0.20	0.78
Net income per limited partner unit, diluted	0.21	0.46	0.20	0.78