Partners' Capital And Distributions (Distributions) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014
Distribution Made to Limited Partner, Distribution Date	May 15, 2014	Feb. 14, 2014	Nov. 14, 2013	Aug. 14, 2013	May 15, 2013
Per Unit Amount	$ 0.5350	$ 0.5225	$ 0.5100	$ 0.4975		$ 0.5500
Distribution Made to Limited Partner, Cash Distributions Paid	$ 48,783	$ 47,453	$ 46,344	$ 42,302	$ 40,405