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Business Segments (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Segments [Abstract] |
Reportable Segments |
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﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Reportable Segments |  |  |  |  |  |
﻿ |  |  |  |  | Specialty |  | Segment |  |  |  | Consolidated
﻿(in thousands) | Civil |  | Building |  | Contractors |  | Total |  | Corporate |  | Total
﻿Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Total revenue | $ | 1,856,164 |  | $ | 1,982,857 |  | $ | 1,213,708 |  | $ | 5,052,729 |  | $ | — |  | $ | 5,052,729
﻿Elimination of intersegment revenue |  | (253,989) |  |  | (41,532) |  |  | — |  |  | (295,521) |  |  | — |  |  | (295,521)
﻿Revenue from external customers | $ | 1,602,175 |  | $ | 1,941,325 |  | $ | 1,213,708 |  | $ | 4,757,208 |  | $ | — |  | $ | 4,757,208
﻿Income from construction operations | $ | 192,207 |  | $ | 34,199 |  | $ | 18,938 |  | $ | 245,344 |  | $ | (65,867) | (a) | $ | 179,477
﻿Capital expenditures | $ | 27,694 |  | $ | 267 |  | $ | 721 |  | $ | 28,682 |  | $ | 1,598 |  | $ | 30,280
﻿Depreciation and amortization(b) | $ | 33,767 |  | $ | 2,021 |  | $ | 4,699 |  | $ | 40,487 |  | $ | 11,443 |  | $ | 51,930
﻿Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Total revenue | $ | 1,830,857 |  | $ | 2,146,747 |  | $ | 1,234,272 |  | $ | 5,211,876 |  | $ | — |  | $ | 5,211,876
﻿Elimination of intersegment revenue |  | (161,894) |  |  | (76,906) |  |  | — |  |  | (238,800) |  |  | — |  |  | (238,800)
﻿Revenue from external customers | $ | 1,668,963 |  | $ | 2,069,841 |  | $ | 1,234,272 |  | $ | 4,973,076 |  | $ | — |  | $ | 4,973,076
﻿Income from construction operations | $ | 172,668 |  | $ | 51,564 |  | $ | 37,908 |  | $ | 262,140 |  | $ | (60,220) | (a) | $ | 201,920
﻿Capital expenditures | $ | 13,541 |  | $ | 516 |  | $ | 1,005 |  | $ | 15,062 |  | $ | 681 |  | $ | 15,743
﻿Depreciation and amortization(b) | $ | 48,561 |  | $ | 2,186 |  | $ | 5,035 |  | $ | 55,782 |  | $ | 11,520 |  | $ | 67,302
﻿Year ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Total revenue | $ | 2,005,193 |  | $ | 1,900,492 |  | $ | 1,228,030 |  | $ | 5,133,715 |  | $ | — |  | $ | 5,133,715
﻿Elimination of intersegment revenue |  | (115,286) |  |  | (97,957) |  |  | — |  |  | (213,243) |  |  | — |  |  | (213,243)
﻿Revenue from external customers | $ | 1,889,907 |  | $ | 1,802,535 |  | $ | 1,228,030 |  | $ | 4,920,472 |  | $ | — |  | $ | 4,920,472
﻿Income from construction operations | $ | 145,213 |  | $ | (1,240) |  | $ | 15,682 |  | $ | 159,655 |  | $ | (54,242) | (a) | $ | 105,413
﻿Capital expenditures | $ | 8,383 |  | $ | 2,877 |  | $ | 1,193 |  | $ | 12,453 |  | $ | 23,459 |  | $ | 35,912
﻿Depreciation and amortization(b) | $ | 22,601 |  | $ | 2,728 |  | $ | 5,507 |  | $ | 30,836 |  | $ | 10,798 |  | $ | 41,634
﻿
| (a) |  | Consists primarily of corporate general and administrative expenses.
| (b) |  | Depreciation and amortization is included in income from construction operations.
Total Assets for Reportable Segments |
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﻿ |  |  |  |  |
﻿ | As of December 31,
﻿(in thousands) | 2017 |  | 2016
﻿Civil | $ | 2,452,108 |  | $ | 2,152,123
﻿Building |  | 909,207 |  |  | 917,317
﻿Specialty Contractors |  | 767,807 |  |  | 813,851
﻿Corporate and other(a) |  | 135,001 |  |  | 155,329
﻿Total assets | $ | 4,264,123 |  | $ | 4,038,620
(a) Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.
Principal Geographical Areas | ﻿
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﻿ |  |  |  |  |  |  |  |
﻿ | Year Ended December 31,
﻿(in thousands) | 2017 |  | 2016 |  | 2015
﻿Revenue: |  |  |  |  |  |  |  |
﻿United States | $ | 4,613,644 |  | $ | 4,802,393 |  | $ | 4,694,165
﻿Foreign and U.S. territories |  | 143,564 |  |  | 170,683 |  |  | 226,307
﻿Total revenue | $ | 4,757,208 |  | $ | 4,973,076 |  | $ | 4,920,472
﻿ ﻿
﻿ |  |  |  |  |
﻿ |  |  |  |  |
﻿ | As of December 31,
﻿(in thousands) | 2017 |  | 2016
﻿Assets: |  |  |  |  |
﻿United States | $ | 4,093,673 |  | $ | 3,911,865
﻿Foreign and U.S. territories |  | 170,450 |  |  | 126,755
﻿Total assets | $ | 4,264,123 |  | $ | 4,038,620
﻿
Reconciliation of Segment Results to Consolidated Income Before Income Taxes |
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﻿ |  |  |  |  |  |  |  |
﻿ | Year Ended December 31,
﻿(in thousands) | 2017 |  | 2016 |  | 2015
﻿Income from construction operations | $ | 179,477 |  | $ | 201,920 |  | $ | 105,413
﻿Other income, net |  | 43,882 |  |  | 6,977 |  |  | 13,569
﻿Interest expense |  | (69,384) |  |  | (59,782) |  |  | (45,143)
﻿Income before income taxes | $ | 153,975 |  | $ | 149,115 |  | $ | 73,839
﻿

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