Intangibles - Summary of Gross Carrying Amount and Related Accumulated Amortization of Definite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 10,329	$ 6,689
Accumulated Amortization	(5,721)	(4,382)
Net Amount	4,608	2,307
Customer List [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,485	2,516
Accumulated Amortization	(2,210)	(2,044)
Net Amount	275	472
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,844	4,173
Accumulated Amortization	(3,511)	(2,338)
Net Amount	$ 4,333	$ 1,835

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

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