Subsequent Events - Additional Information (Detail) - Subsequent Event - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	2 Months Ended
	Oct. 31, 2016	Dec. 07, 2016
Michigan Based Propane Dealer
Subsequent Event [Line Items]
Cash paid to acquire business		$ 5.2
Dividend Declared
Subsequent Event [Line Items]
Distribution declared	$ 0.1025
Partners capital projected distribution amount on annualized basis	0.41
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	$ 5.9
Amount to paid to the General Partner	0.1
Incentive distribution to the General Partner	0.1
Incentive distributions to management	$ 0.1
Dividend payable date	Nov. 09, 2016
Dividend record date	Oct. 31, 2016