Consolidated Statement of Changes in Partners' Capital (Unaudited) (USD $) In Thousands	Total	General Partner Preferred Units	General Partner Units	Limited Partner Units	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2011	$ 1,081,992	$ 266,211	$ 737,914	$ 90,246	$ (12,379)
Issuance of General Partner Units, Net of Issuance Costs	17,818		17,818
Stock Based Compensation Activity	1,543		1,543
Conversion of Limited Partner Units to General Partner Units			2,469	(2,469)
Preferred Unit Distributions	(9,560)	(9,560)
Net Income (Loss)	(9,240)	9,560	(17,755)	(1,045)
Other Comprehensive Income	3,727				3,727
Ending balance at Jun. 30, 2012	$ 1,086,280	$ 266,211	$ 741,989	$ 86,732	$ (8,652)