RETIREMENT AND DEFERRED COMPENSATION PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
United States
Components of net periodic benefit cost:
Service cost	$ 2,410	$ 3,945	$ 4,819	$ 7,890
Interest cost	2,157	1,743	4,315	3,485
Expected return on plan assets	(3,095)	(3,229)	(6,189)	(6,456)
Amortization of net loss	0	1,668	0	3,335
Amortization of prior service cost	0	0	0	0
Net periodic benefit cost	1,472	4,127	2,945	8,254
Foreign Plans
Components of net periodic benefit cost:
Service cost	1,487	1,876	2,957	3,846
Interest cost	917	342	1,820	715
Expected return on plan assets	(589)	(689)	(1,169)	(1,416)
Amortization of net loss	229	433	457	877
Amortization of prior service cost	45	33	88	71
Net periodic benefit cost	$ 2,089	$ 1,995	$ 4,153	$ 4,093