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Construction Joint Ventures - Balance Sheet Information (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Current assets | $ 257,179 | $ 278,526
Less current liabilities | (158,462) | (182,292)
Sterling’s receivables from and equity in construction joint ventures | 12,485 | 11,380
Joint Ventures |  |
Schedule of Equity Method Investments [Line Items] |  |
Current assets | 67,990 | 64,574
Less current liabilities | (76,651) | (78,349)
Net liabilities | (8,661) | (13,775)
Sterling’s receivables from and equity in construction joint ventures | $ 12,485 | $ 11,380

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