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Construction Joint Ventures - Balance Sheet Information (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Current assets | $ 309,023 | $ 302,616
Less current liabilities | (198,532) | (179,174)
Sterling’s receivables from and equity in noncontrolling construction joint ventures | 14,381 | 10,720
Joint Ventures |  |
Schedule of Equity Method Investments [Line Items] |  |
Current assets | 95,991 | 64,815
Less current liabilities | (98,192) | (74,543)
Net liabilities | (2,201) | (9,728)
Sterling’s receivables from and equity in noncontrolling construction joint ventures | $ 14,381 | $ 10,720

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