Intangible Assets - Summary of Partnership's Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 153,868	$ 154,868
Less: Accumulated amortization	(46,728)	(37,152)
Intangible assets, net	$ 107,140	117,716
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	21 years
Intangible assets, gross	$ 4,785	4,785
Contract-Based Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 148,342	149,342
Contract-Based Intangible Assets [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	2 years
Contract-Based Intangible Assets [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	12 years
Non-compete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 741	$ 741
Non-compete Agreements [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	2 years
Non-compete Agreements [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	3 years