Segment Information, Revenue by Major Market (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Market	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Information [Abstract]
Number of major markets | Market	4
Number of markets | Market	45
Segment Contribution [Abstract]
Revenue	$ 2,695,669	$ 2,581,934	$ 2,420,416
Major Market [Member] | Mainland China [Member]
Segment Contribution [Abstract]
Revenue	568,774	625,538	722,526
Major Market [Member] | South Korea [Member]
Segment Contribution [Abstract]
Revenue	354,252	326,478	329,978
Major Market [Member] | Japan [Member]
Segment Contribution [Abstract]
Revenue	266,216	273,681	260,039
Major Market [Member] | United States [Member]
Segment Contribution [Abstract]
Revenue	540,253	425,155	324,727
Major Market [Member] | All Others [Member]
Segment Contribution [Abstract]
Revenue	$ 966,174	$ 931,082	$ 783,146