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Construction Joint Ventures - Income Statement Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Sterling’s noncontrolling interest:    
Revenues $ 391 $ 271
Joint Ventures    
Schedule of Equity Method Investments [Line Items]    
Revenues 12,253 38,453
Income before tax 2,108 4,395
Sterling’s noncontrolling interest:    
Revenues 4,900 16,650
Income before tax $ 860 $ 1,873