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Consolidated Statements of Cash Flows (Tables) | 12 Months Ended
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Dec. 31, 2018
Consolidated Statement of Cash Flows [Abstract] |
Changes in Other Components of Working Capital |
﻿ |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |
﻿ | Year Ended December 31,
﻿(in thousands) | 2018 |  | 2017 |  | 2016
﻿(Increase) Decrease in: |  |  |  |  |  |  |  |
﻿Accounts receivable | $ | 3,899 |  | $ | (91,062) |  | $ | (184,549)
﻿Retainage receivable |  | 56,754 |  |  | 33,453 |  |  | (85,351)
﻿Costs and estimated earnings in excess of billings |  | (209,537) |  |  | (100,932) |  |  | 73,349
﻿Other current assets |  | 15,398 |  |  | (19,718) |  |  | 39,480
﻿(Decrease) Increase in: |  |  |  |  |  |  |  |
﻿Accounts payable |  | (78,243) |  |  | (35,751) |  |  | 3,025
﻿Retainage payable |  | (49,864) |  |  | 3,526 |  |  | 53,527
﻿Billings in excess of costs and estimated earnings |  | 76,703 |  |  | 125,757 |  |  | 42,926
﻿Accrued expenses and other current liabilities |  | 28,046 |  |  | 24,513 |  |  | (32,937)
﻿Changes in other components of working capital | $ | (156,844) |  | $ | (60,214) |  | $ | (90,530)
﻿ |  |  |  |  |  |  |  |
﻿Cash paid during the year for: |  |  |  |  |  |  |  |
﻿Interest | $ | 51,063 |  | $ | 50,443 |  | $ | 47,403
﻿Income taxes | $ | 13,652 |  | $ | 39,776 |  | $ | 26,908
﻿

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- Definition Tabular disclosure of the net increase (decrease) in operating capital in the operating section of the statement of cash flows, represents the entire footnote disclosure that provides details regarding the net change during the reporting period of all assets and liabilities used in operating activities. + References No definition available. + Details
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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration