Acquisitions, Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Business acquisition, goodwill		$ 3,475		$ 1,676
Stock-based compensation expense		3,503	$ 2,344
Chief Executive Officer [Member]
Business Acquisition [Line Items]
Stock-based compensation expense		745	6
Non-Employee Shareholders [Member]
Business Acquisition [Line Items]
Interest expense		0	$ 251
GreenHaven Commodity Services, LLC [Member]
Business Acquisition [Line Items]
Percentage of issued and outstanding membership interest acquired	100.00%
Business acquisition, cash paid	$ 11,800
Business acquisition, recognized an intangible asset	9,953
Business acquisition, goodwill	$ 1,799
Intangible asset related to its customary advisory agreement		$ 9,953