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RETIREMENT AND DEFERRED COMPENSATION PLANS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
United States |  |  |  |
Change in benefit obligation: |  |  |  |
Service cost | $ 2,772 | $ 2,853 | $ 8,320 | $ 8,546
Interest cost | 1,845 | 1,713 | 5,536 | 5,139
Change in plan assets: |  |  |  |
Employer contribution |  |  | 365 |
Components of net periodic benefit cost: |  |  |  |
Service cost | 2,772 | 2,853 | 8,320 | 8,546
Interest cost | 1,845 | 1,713 | 5,536 | 5,139
Expected return on plan assets | (3,095) | (2,803) | (9,284) | (8,409)
Amortization of net loss | 490 | 1,214 | 1,468 | 3,642
Net periodic benefit cost | 2,012 | 2,977 | 6,040 | 8,918
Minimum funding requirements |  |  | 0 |
Foreign Plans |  |  |  |
Change in benefit obligation: |  |  |  |
Service cost | 1,429 | 1,457 | 4,334 | 4,479
Interest cost | 491 | 445 | 1,487 | 1,374
Change in plan assets: |  |  |  |
Employer contribution |  |  | 1,500 |
Components of net periodic benefit cost: |  |  |  |
Service cost | 1,429 | 1,457 | 4,334 | 4,479
Interest cost | 491 | 445 | 1,487 | 1,374
Expected return on plan assets | (581) | (645) | (1,759) | (1,982)
Amortization of net loss | 356 | 422 | 1,078 | 1,301
Amortization of prior service cost | 111 | 122 | 337 | 376
Net periodic benefit cost | 1,806 | $ 1,801 | 5,477 | $ 5,548
Expected contribution in current fiscal year | $ 4,300 |  | $ 4,300 |

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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation before adjustment for gain (loss) due to settlements or curtailments. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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