Subsequent Events - Additional Information (Detail) - Subsequent Event $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended
	Jul. 30, 2019 USD ($) $ / shares shares
Plan III Common Units Repurchase Program
Subsequent Event [Line Items]
Company's common units repurchased and retired | shares	0.1
Average price paid per unit | $ / shares	$ 9.76
Dividend Declared
Subsequent Event [Line Items]
Distribution declared | $ / shares	0.125
Partners capital projected distribution amount on annualized basis | $ / shares	0.50
Minimum dividend distribution per unit | $ / shares	$ 0.0675
Amount to paid to common unit holders | $	$ 6.2
Amount to paid to the General Partner | $	0.2
Incentive distribution to the General Partner | $	0.2
Incentive distributions to management | $	$ 0.2
Dividend payable date	Aug. 06, 2019
Dividend record date	Jul. 29, 2019