Investments in Affiliates - Equity Method Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments in affiliates	$ 86,611	$ 80,725
Foreign
Schedule of Equity Method Investments [Line Items]
Investments in affiliates	64,698	58,579
Real estate
Schedule of Equity Method Investments [Line Items]
Investments in affiliates	7,460	8,517
Asphalt terminal
Schedule of Equity Method Investments [Line Items]
Investments in affiliates	$ 14,453	$ 13,629