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EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined contribution plan, expense | $ 16,607 | $ 14,099 | $ 12,145
U.S. 401(k) Plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined contribution plan, expense | 5,506 | 5,003 | 4,510
International Plans |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined contribution plan, expense | $ 11,101 | $ 9,096 | $ 7,635

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition 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 No definition available. + Details
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- Details
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- Details
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