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