RETIREMENT BENEFIT PLANS - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	$ 406	$ 348	$ 1,153	$ 1,044
Interest costs	212	117	519	351
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(50)	0	(151)	0
Amortization of prior service costs	0	0	0	0
Amortization of actuarial gains	3	(46)	(3)	(138)
Total	571	419	1,518	1,257
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	82	446	718	1,338
Interest costs	78	374	623	1,122
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	0	0	0	0
Amortization of prior service costs	(341)	34	(615)	102
Amortization of actuarial gains	(198)	0	(309)	0
Total	$ (379)	$ 854	$ 417	$ 2,562