Subsequent Events - Additional Information (Detail) (Cash Distributions for Limited and General Partner, USD $)	3 Months Ended	0 Months Ended
	Sep. 30, 2014	Oct. 23, 2014 Subsequent Event
Subsequent Event [Line Items]
Declaration of cash distribution		$ 0.615
Cash distribution declaration date	Oct. 23, 2014	Oct. 23, 2014
Distribution payment date		Nov. 14, 2014
Distribution record date		Nov. 07, 2014