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