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EMPLOYEE BENEFIT PLANS (Tables) | 12 Months Ended
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Dec. 31, 2018
Postemployment Benefits [Abstract] |
Summary of Defined Contribution Plans Expenses | The following expenses related to defined contribution plans were recorded in the Company’s consolidated statements of operations:
(in thousands) | 2018 |  | 2017 |  | 2016
U.S. 401(k) Plan | $ | 5,506 |  |  | $ | 5,003 |  |  | $ | 4,510 |
International Plans | 11,101 |  |  | 9,096 |  |  | 7,635 |
| $ | 16,607 |  |  | $ | 14,099 |  |  | $ | 12,145 |

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- Definition Tabular disclosure of defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans. + 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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