Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Defined benefit plans:
Multiemployer pension plans	$ 440	$ 409
Defined contribution pension plans	3,413	3,169
Pension Plan | U.S. Plans
Defined benefit plans:
Service cost	0	0
Interest cost	1,203	1,845
Expected return on plan assets	(3,050)	(2,842)
Recognized prior service costs	0	0
Recognized loss	1,385	1,425
Defined benefit pension plans net periodic pension cost (benefit)	(462)	428
Defined benefit pension plan	2,866	2,027
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	1,400
Pension Plan | International Plans
Defined benefit plans:
Service cost	493	429
Interest cost	3,193	4,395
Expected return on plan assets	(11,367)	(10,190)
Recognized prior service costs	127	107
Recognized loss	4,563	3,655
Defined benefit pension plans net periodic pension cost (benefit)	(2,991)	(1,604)
Defined benefit pension plan	12,622	$ 10,060
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	$ 12,700