Subsequent Events - Additional Information (Detail) (Subsequent Event, Dividend Declared, USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended
	Apr. 30, 2015
Subsequent Event | Dividend Declared
Subsequent Event [Line Items]
Distribution declared	$ 0.095
Partners capital projected distribution amount on annualized basis	$ 0.38
Minimum dividend distribution per unit	$ 0.0675
Percentage of distributions to common unit holders in excess of minimum quarterly distribution	90.00%
Percentage of distributions to general unit holders in excess of minimum quarterly distribution	10.00%
Amount to paid to common unit holders	$ 5.4
Amount to paid to the General Partner	0.1
Incentive distribution to the General Partner	0.09
Incentive distributions to management	$ 0.09
Dividend payable date	May 08, 2015
Dividend record date	Apr. 30, 2015