Segment Operating Results - Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Assets	$ 3,703,298	$ 3,620,923	$ 3,802,657
United States [Member]
Segment Reporting Information [Line Items]
Total Assets	3,146,756	2,902,153
Europe And Other [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 556,542	$ 718,770