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Segment Information - Selected Segment Financial Data, Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 1,834,342 | $ 1,975,788
Americas Segment [Member] | United States [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,061,058 | 1,182,309
Americas Segment [Member] | Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 31,790 | 33,492
EMEA Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 622,932 | 643,275
Asia/Pacific Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | $ 118,562 | $ 116,712

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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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
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