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Construction Joint Ventures - Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Sterling’s noncontrolling interest:
Revenues	$ 750	$ 411	$ 1,141	$ 682
Joint Ventures
Schedule of Equity Method Investments [Line Items]
Revenues	19,524	39,185	31,777	77,638
Income before tax	6,220	6,072	8,328	10,467
Sterling’s noncontrolling interest:
Revenues	7,883	16,267	12,783	32,917
Income before tax	$ 2,558	$ 2,503	$ 3,418	$ 4,376

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