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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Taxes [Abstract] |
Summary of Income Before Taxes |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Year Ended December 31,
﻿(in thousands) |  | 2017 |  | 2016 |  | 2015
﻿United States operations |  | $ | 135,177 |  | $ | 128,072 |  | $ | 69,822
﻿Foreign operations |  |  | 18,798 |  |  | 21,043 |  |  | 4,017
﻿Total |  | $ | 153,975 |  | $ | 149,115 |  | $ | 73,839
﻿
Provision for Income Taxes |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Year Ended December 31,
﻿(in thousands) |  | 2017 |  | 2016 |  | 2015
﻿Current expense: |  |  |  |  |  |  |  |  |
﻿Federal |  | $ | 12,329 |  | $ | 43,850 |  | $ | 5,465
﻿State |  |  | 6,763 |  |  | 13,039 |  |  | (362)
﻿Foreign |  |  | 3,435 |  |  | 6,573 |  |  | 1,126
﻿Total current |  |  | 22,527 |  |  | 63,462 |  |  | 6,229
﻿ |  |  |  |  |  |  |  |  |
﻿Deferred (benefit) expense: |  |  |  |  |  |  |  |  |
﻿Federal |  |  | (30,021) |  |  | (3,054) |  |  | 19,583
﻿State |  |  | 5,560 |  |  | (5,302) |  |  | 2,735
﻿Foreign |  |  | 1,365 |  |  | (1,813) |  |  | —
﻿Total deferred |  |  | (23,096) |  |  | (10,169) |  |  | 22,318
﻿Total (benefit) provision |  | $ | (569) |  | $ | 53,293 |  | $ | 28,547
﻿
Reconciliation of Provision for Income Taxes |
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﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Year Ended December 31,
﻿ |  | 2017 |  | 2016 |  | 2015
﻿(dollars in thousands) |  | Amount |  | Rate |  | Amount |  | Rate |  | Amount |  | Rate
﻿Federal income tax expense at statutory tax rate |  | $ | 53,892 |  | 35.0 | % |  | $ | 52,190 |  | 35.0 | % |  | $ | 25,844 |  | 35.0 | %
﻿State income taxes, net of federal tax benefit |  |  | 7,753 |  | 5.0 |  |  |  | 4,614 |  | 3.1 |  |  |  | 3,685 |  | 5.0 |
﻿Impact of federal tax law change |  |  | (53,348) |  | (34.6) |  |  |  | — |  | — |  |  |  | — |  | — |
﻿Officers' compensation |  |  | 2,622 |  | 1.7 |  |  |  | 3,807 |  | 2.6 |  |  |  | 2,900 |  | 3.9 |
﻿Domestic production activities deduction |  |  | (2,668) |  | (1.7) |  |  |  | (4,018) |  | (2.7) |  |  |  | (1,499) |  | (2.0) |
﻿Noncontrolling interest |  |  | (2,137) |  | (1.4) |  |  |  | — |  | — |  |  |  | — |  | — |
﻿Reversal of taxes payable due to statute expiration |  |  | (4,337) |  | (2.8) |  |  |  | — |  | — |  |  |  | — |  | — |
﻿Other |  |  | (2,346) |  | (1.6) |  |  |  | (3,300) |  | (2.3) |  |  |  | (2,383) |  | (3.2) |
﻿Income tax (benefit) provision |  | $ | (569) |  | (0.4) | % |  | $ | 53,293 |  | 35.7 | % |  | $ | 28,547 |  | 38.7 | %
﻿
Significant Components of Deferred Tax Assets and Liabilities | The following is a summary of the significant components of the deferred tax assets and liabilities: ﻿
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿ |  | As of December 31,
﻿(in thousands) |  | 2017 |  | 2016
﻿Deferred tax assets: |  |  |  |  |  |
﻿Timing of expense recognition |  | $ | 22,730 |  | $ | 36,055
﻿Net operating losses |  |  | 8,590 |  |  | 10,140
﻿Other, net |  |  | 15,618 |  |  | 33,507
﻿Deferred tax assets |  |  | 46,938 |  |  | 79,702
﻿Valuation allowance |  |  | (381) |  |  | (460)
﻿Net deferred tax assets |  |  | 46,557 |  |  | 79,242
﻿Deferred tax liabilities: |  |  |  |  |  |
﻿Intangible assets, due primarily to purchase accounting |  |  | (30,019) |  |  | (34,679)
﻿Fixed assets, due primarily to purchase accounting |  |  | (73,833) |  |  | (107,081)
﻿Construction contract accounting |  |  | (17,539) |  |  | (12,564)
﻿Joint ventures |  |  | (11,343) |  |  | (29,609)
﻿Other |  |  | (22,263) |  |  | (24,970)
﻿Deferred tax liabilities |  |  | (154,997) |  |  | (208,903)
﻿ |  |  |  |  |  |
﻿Net deferred tax liabilities |  | $ | (108,440) |  | $ | (129,661)
﻿ ﻿ ﻿ T h e n et d e f e rr ed tax lia b ili t ies are presented i n t h e C o ns o li d at e d B ala n ce S h eets as f o ll o w s: ﻿
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿ |  | As of December 31,
﻿(in thousands) |  | 2017 |  | 2016
﻿Deferred tax assets |  | $ | 64 |  | $ | 1,346
﻿Deferred tax liabilities |  |  | (108,504) |  |  | (131,007)
﻿Net deferred tax liabilities |  | $ | (108,440) |  | $ | (129,661)
﻿
Reconciliation of Gross Unrecognized Tax Benefit |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | As of December 31,
﻿(in thousands) |  | 2017 |  | 2016 |  | 2015
﻿Beginning balance |  | $ | 7,574 |  | $ | 3,612 |  | $ | 7,636
﻿Change in tax positions of prior years |  |  | (1,207) |  |  | 3,543 |  |  | (3,073)
﻿Change in tax positions of current year |  |  | 128 |  |  | 419 |  |  | 169
﻿Reduction in tax positions for statute expirations |  |  | — |  |  | — |  |  | (1,120)
﻿Ending Balance |  | $ | 6,495 |  | $ | 7,574 |  | $ | 3,612
﻿

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