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Construction Joint Ventures - Construction Joint Ventures, Partner Income (Details) - Equity Method Investment, Nonconsolidated Investee or Group of Investees - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]      
Revenues $ 141,557 $ 217,854 $ 138,503
Income before tax 25,820 23,835 15,534
Sterling’s noncontrolling interest:      
Revenues 58,674 94,306 59,257
Income before tax $ 10,535 $ 10,168 $ 6,564