Consolidated Balance Sheets Parenthetical	Jun. 30, 2011	May 31, 2011	Dec. 31, 2010
Equity:
Limited Partner Equity, units authorized	92,400,000		92,400,000
Limited Partner Equity, units issued	86,708,914		85,865,619
Limited Partner Equity, units outstanding	85,571,714		84,728,419
Units issued as a unit distribution		843,295
Treasury Units at Cost, units outstanding	1,137,200		1,137,200