Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Gross Value	$ 37,025	$ 14,728
Accumulated Amortization	(10,694)	(10,067)
Net Value	26,331	4,661
Customer Relationships [Member]
Goodwill [Line Items]
Gross Value	20,998	7,474
Accumulated Amortization	(4,576)	(4,283)
Net Value	16,422	3,191
Licensed Technology [Member]
Goodwill [Line Items]
Gross Value	5,900
Accumulated Amortization	(27)
Net Value	5,873
Developed Technology [Member]
Goodwill [Line Items]
Gross Value	5,597	5,524
Accumulated Amortization	(4,827)	(4,663)
Net Value	770	861
Intellectual Property [Member]
Goodwill [Line Items]
Gross Value	930	930
Accumulated Amortization	(886)	(852)
Net Value	44	78
Supplier Relationship [Member]
Goodwill [Line Items]
Gross Value	2,800
Accumulated Amortization	(58)
Net Value	2,742
Trade Names [Member]
Goodwill [Line Items]
Gross Value	100	100
Accumulated Amortization	(77)	(65)
Net Value	23	35
Patent [Member]
Goodwill [Line Items]
Gross Value	500	500
Accumulated Amortization	(106)	(89)
Net Value	394	411
Non-compete [Member]
Goodwill [Line Items]
Gross Value	200	200
Accumulated Amortization	(137)	(115)
Net Value	$ 63	$ 85

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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