Goodwill and Other Intangibles - Changes in Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 16,544
Currency translation	(677)
Ending Balance	15,867
USA [Member]
Goodwill [Line Items]
Beginning Balance	3,078
Currency translation	0
Ending Balance	3,078
The Americas [Member]
Goodwill [Line Items]
Beginning Balance	4,292
Currency translation	(205)
Ending Balance	4,087
EMEA [Member]
Goodwill [Line Items]
Beginning Balance	1,495
Currency translation	(117)
Ending Balance	1,378
Asia-Pacific [Member]
Goodwill [Line Items]
Beginning Balance	7,679
Currency translation	(355)
Ending Balance	$ 7,324

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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