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Construction Joint Ventures - Construction Joint Ventures, Partner Share (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Current assets	$ 302,616	$ 278,526
Less current liabilities	(179,174)	(182,292)
Sterling’s receivables from and equity in construction joint ventures	10,720	11,380
Joint Ventures
Schedule of Equity Method Investments [Line Items]
Current assets	64,815	64,574
Less current liabilities	(74,543)	(78,349)
Net liabilities	(9,728)	(13,775)
Sterling’s receivables from and equity in construction joint ventures	$ 10,720	$ 11,380

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Amounts due from minority-owned entities in which the reporting entity shares joint control with another party or group, due within 1 year (or 1 business cycle). Also, includes the entity's equity in minority-owned joint ventures.

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