Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Finite and Indefinite Lived Intangible Assets [Line Items]
Intangible assets, Trade name	$ 2,605	$ 2,696
Intangible assets, gross	13,344	13,668
Accumulated amortization	(3,269)	(2,647)
Intangible assets, net	10,075	11,021
Customer Relationships [Member]
Finite and Indefinite Lived Intangible Assets [Line Items]
Intangible assets, gross	6,377	6,543
Developed Technology [Member]
Finite and Indefinite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 4,362	$ 4,429