Consolidated Statements Of Operations And Comprehensive Income (Parenthetical) (USD $)	12 Months Ended						3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012
Distributions paid per limited partner unit	$ 1.385	[1]	$ 1.78	[1]	$ 1.85	[1]
Subordinated Units [Member]
Distributions paid per limited partner unit	$ 0		$ 0				$ 0	$ 0	$ 0

[1] No distributions were paid on the subordinated units during 2014, 2013 or for the three months ended June 30, 2012, September 30, 2012 and December 31, 2012.