Partners' Capital - Summary of Dividend Distributions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Partners Capital And Distributions [Line Items]
General Partner/Limited Partner Units, Total Distribution	$ 11,824
Total Preferred Dividend/Distribution	2,481
Series F Preferred Units [Member]
Partners Capital And Distributions [Line Items]
Total Preferred Dividend/Distribution	566
Series G Preferred Units [Member]
Partners Capital And Distributions [Line Items]
Total Preferred Dividend/Distribution	$ 453