RETIREMENT AND DEFERRED COMPENSATION PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
United States
Components of net periodic benefit cost:
Service cost	$ 3,945	$ 4,227
Interest cost	1,742	1,611
Expected return on plan assets	(3,227)	(3,073)
Amortization of net loss	1,667	2,503
Amortization of prior service cost	0	0
Net periodic benefit cost	4,127	5,268
Foreign Plans
Components of net periodic benefit cost:
Service cost	1,970	2,078
Interest cost	373	218
Expected return on plan assets	(727)	(723)
Amortization of net loss	444	589
Amortization of prior service cost	38	45
Net periodic benefit cost	$ 2,098	$ 2,207