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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2018
Summary of Changes in Accumulated Other Comprehensive Income | The following table summarizes the changes in accumulated other comprehensive income by component (in thousands):
(In thousands) |  | Foreign currency translation gain (loss) |
Balance at December 31, 2017 |  | $ | (6,363 | )
Foreign currency translation gain |  |  | 251 |
Balance at March 31, 2018 |  | $ | (6,112 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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Namespace Prefix: | us-gaap_
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