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Segment Reporting and Significant Customer Information - Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Revenue for each segment recognized based on customer location
Long-lived assets	$ 4,921	$ 6,158
Total assets	45,672	53,530
Intersegment Eliminations
Revenue for each segment recognized based on customer location
Long-lived assets	0	0
Total assets	(72,864)	(66,851)
Asia Pacific | Operating Segments
Revenue for each segment recognized based on customer location
Long-lived assets	140	209
Total assets	3,697	5,295
Europe | Operating Segments
Revenue for each segment recognized based on customer location
Long-lived assets	496	763
Total assets	54,593	49,125
North America | Operating Segments
Revenue for each segment recognized based on customer location
Long-lived assets	4,285	5,186
Total assets	$ 60,246	$ 65,961

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- Definition

Segment reporting information assets.

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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