Equity, Distributions Earned (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Distributions Earned by Limited or General Partners
General partner’s IDRs	$ 6,068		$ 1,186
Total general partner’s distributions	6,847	[1]	1,666	[1]
Limited partners' distributions on common units	23,129		14,835
Limited partner’s distributions on subordinated units	9,000		7,475
Total Cash Distributions	38,976		23,976
General Partner
Distributions Earned by Limited or General Partners
General partner’s distributions	779		480
General partner’s IDRs	6,068		1,186
Total general partner’s distributions	6,847		1,666
Common
Distributions Earned by Limited or General Partners
Limited partners' distributions on common units	23,129		14,835
Total limited partners' distributions	32,129		22,310
Subordinated
Distributions Earned by Limited or General Partners
Limited partner’s distributions on subordinated units	$ 9,000		$ 7,475

[1] General partner’s distributions (including IDRs) consist of an approximate 2% general partner interest and IDRs, which entitle the general partner to receive increasing percentages, up to 50%, of quarterly distributions in excess of $0.388125 per unit per quarter. See Note K of our Annual Report on Form 10-K for the year ended December 31, 2013 for further discussion related to IDRs.