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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, 2021 | Dec. 31, 2020
Change In Projected Benefit Obligations |  |
Projected benefit obligations, beginning of year | $ 72,869 | $ 66,972
Interest cost | 100 | 219
Service cost | 2,741 | 4,029
Actuarial (gain) loss | (5,044) | (3,347)
Plan amendments | (586) | 0
Plan settlements | (655) | (77)
Employee contribution | 917 | 883
Premiums paid | (373) | (388)
Benefit payment | (2,128) | (1,537)
Plans transferred in | 0 | 0
Effect of foreign currency exchange rates | (2,657) | 6,115
Projected benefit obligations, end of year | 65,184 | 72,869
Change In Plan Assets |  |
Plan assets at fair value, beginning of year | 37,825 | 30,770
Actual return on plan assets | 3,371 | 2,882
Employer contributions | 2,254 | 2,274
Employee contributions | 917 | 883
Plan settlements | (633) | (56)
Benefits paid | (2,128) | (1,537)
Premiums paid | (373) | (388)
Effect of foreign currency exchange rates | (1,319) | 2,997
Plan assets at fair value, end of year | $ 39,914 | $ 37,825

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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=123447040&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=123450688&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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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