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RETIREMENT BENEFIT PLANS (Schedule of Change in Benefit Obligations and Plan Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Change In Projected Benefit Obligations |  |
Projected benefit obligations, beginning of year | $ 47,661 | $ 668
Interest cost | 351 | 95
Service cost | 2,704 | 565
Actuarial loss | 762 | (12)
Employee contribution | 641 | 180
Premiums paid | 0 | (89)
Benefit payment | (1,483) | (19)
Plans transferred in | 2,280 | 46,448
Effect of foreign currency exchange rates | (374) | (175)
Projected benefit obligations, end of year | 52,542 | 47,661
Change In Plan Assets |  |
Plan assets at fair value, beginning of year | 26,943 | 0
Actual return on plan assets | 1,802 | 82
Employer contributions | 1,720 | 450
Employee contributions | 641 | 180
Benefits paid | (1,463) | 0
Premiums paid | 0 | (89)
Plans transferred in | 1,589 | 26,477
Effect of foreign currency exchange rates | (129) | (157)
Plan assets at fair value, end of year | $ 31,103 | $ 26,943

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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + 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 (b)(1) -URI http://asc.fasb.org/extlink&oid=108410482&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=112275985&loc=d3e4179-114921 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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