Issuances of Limited Partner Units - Additional Information (Detail) - USD ($)			3 Months Ended	6 Months Ended
	Apr. 20, 2016	Nov. 19, 2015	Jun. 30, 2016	Jun. 30, 2016
Limited Partners' Capital Account [Line Items]
Distribution units issued			61,553	117,290
Cash Distributions paid			$ 1,500,000	$ 3,000,000
Public offering, common units sold	2,000,000
Public offering, price per share	$ 23.65
Public offering, net proceeds	$ 51,500,000
Over-Allotment Option
Limited Partners' Capital Account [Line Items]
Issuance of common units	300,000
ATM Agreement
Limited Partners' Capital Account [Line Items]
Issuance of common units			176,208	903,682
Proceeds from issuance of common units, net			$ 4,200,000	$ 23,000,000
ATM Agreement | Maximum
Limited Partners' Capital Account [Line Items]
Value of shares issuable under market agreement		$ 100,000,000