RETIREMENT AND DEFERRED COMPENSATION PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
United States
Components of net periodic benefit cost:
Service cost	$ 2,366	$ 2,410	$ 4,731	$ 4,819
Interest cost	2,252	2,157	4,484	4,315
Expected return on plan assets	(3,130)	(3,095)	(6,231)	(6,189)
Amortization of net loss	0	0	0	0
Amortization of prior service cost	0	0	0	0
Net periodic benefit cost	1,488	1,472	2,984	2,945
Foreign Plans
Components of net periodic benefit cost:
Service cost	1,603	1,487	3,233	2,957
Interest cost	867	917	1,742	1,820
Expected return on plan assets	(558)	(589)	(1,122)	(1,169)
Amortization of net loss	257	229	516	457
Amortization of prior service cost	26	45	54	88
Net periodic benefit cost	$ 2,195	$ 2,089	$ 4,423	$ 4,153