RETIREMENT AND DEFERRED COMPENSATION PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
United States
Components of net periodic benefit cost:
Service cost	$ 3,945	$ 3,941	$ 7,890	$ 8,168
Interest cost	1,743	1,604	3,485	3,215
Expected return on plan assets	(3,229)	(3,064)	(6,456)	(6,137)
Amortization of net loss	1,668	2,501	3,335	5,004
Amortization of prior service cost	0	0	0	0
Net periodic benefit cost	4,127	4,982	8,254	10,250
Foreign Plans
Components of net periodic benefit cost:
Service cost	1,876	2,071	3,846	4,149
Interest cost	342	208	715	426
Expected return on plan assets	(689)	(721)	(1,416)	(1,444)
Amortization of net loss	433	591	877	1,180
Amortization of prior service cost	33	44	71	89
Net periodic benefit cost	$ 1,995	$ 2,193	$ 4,093	$ 4,400