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Business Segment and Foreign Operations - Long-lived Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
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Long-lived Assets from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived tangible assets | $ 117,273 | $ 110,247
United States |  |
Long-lived Assets from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived tangible assets | 13,004 | 11,948
People's Republic of China (PRC) |  |
Long-lived Assets from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived tangible assets | 100,300 | 94,113
All other countries |  |
Long-lived Assets from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived tangible assets | $ 3,969 | $ 4,186

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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 + Details
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