Investments in Affiliates - Equity Method Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Investments in and Advances to Affiliates [Line Items]
Total investments in affiliates	$ 92,910	$ 80,725
Foreign
Investments in and Advances to Affiliates [Line Items]
Total investments in affiliates	68,407	58,579
Real estate
Investments in and Advances to Affiliates [Line Items]
Total investments in affiliates	7,136	8,517
Asphalt terminal
Investments in and Advances to Affiliates [Line Items]
Total investments in affiliates	$ 17,367	$ 13,629