Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 33,074	$ 15,356
Accumulated amortization	(9,232)	(6,722)
Net carrying amount	23,842	8,634
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	5,739	4,065
Accumulated amortization	(2,620)	(2,017)
Net carrying amount	$ 3,119	$ 2,048
Developed Technology | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	3 years 10 days	3 years 15 days
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 3,231	$ 2,495
Accumulated amortization	(1,057)	(701)
Net carrying amount	$ 2,174	$ 1,794
Tradenames | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	4 years 5 months 4 days	5 years 2 months 5 days
Non-compete
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 240	$ 240
Accumulated amortization	(170)	(110)
Net carrying amount	$ 70	$ 130
Non-compete | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	2 years	2 years
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 23,864	$ 8,556
Accumulated amortization	(5,385)	(3,894)
Net carrying amount	$ 18,479	$ 4,662
Customer Relationships | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	5 years	5 years