Significant Accounting Policies	9 Months Ended
Sep. 30, 2014
Significant Accounting Policies [Abstract]
Significant Accounting Policies	(2) Significant Accounting Policies The significant accounting policies followed by the Company and its subsidiaries in preparing its consolidated financial statements are set forth in Note 1 to such financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. Recently Issued Accounting Pronouncements In February 2013, the FASB issued ASU 2013-04 Liabilities (Topic 405), which provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date. This ASU is an update to FASB ASC Topic 405, “Liabilities”. The amendments in this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this guidance did not have a material impact on the Company’s financial statements. In July 2013, the FASB issued ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (a consensus of the Emerging Issues Task Force). This ASU addresses when unrecognized tax benefits should be presented as reductions to deferred tax assets for net operating loss carryforwards in the financial statements. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this guidance did not have a material impact on the Company’s financial statements. In April 2014, the FASB issued FASB ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. The amendments in this update require a disposal of a component of an entity or a group of components of an entity to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. This ASU expands disclosure requirements about discontinued operations and adds new disclosures for individually significant dispositions that do not qualify as discontinued operations. ASU 2014-08 is effective prospectively for annual periods beginning on or after December 15, 2014, and interim periods within annual periods beginning on or after December 15, 2015. Early adoption is permitted, but only for disposals that have not been reported in financial statements previously issued. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements. In May 2014, the FASB issued FASB ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition. This ASU addresses when an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period, using one of two retrospective application methods. Early application is not permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements. In June 2014, the FASB issued ASU No. 2014-12, Compensation — Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period, clarifying the recognition timing of expense associated with certain performance based stock awards when the performance target that affects vesting could be achieved after the requisite service period. This ASU is an update to FASB ASC Topic 718 and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015 with earlier adoption permitted. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements. In August 2014, the FASB issued FASB ASU No. 2014-15, Presentation of Financial Statements— Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The amendments in this update define management’s responsibility under GAAP to evaluate when and how substantial doubt about the organization’s ability to continue as a going concern should be disclosed in the financial statement footnotes. This ASU expands disclosure requirements about principal conditions or events that raise substantial doubt. It also requires disclosing management’s evaluation of the significance of those conditions or events in relationship to the organization’s ability to meet its obligations, and management’s plans that are intended to either alleviate substantial doubt or to mitigate conditions or events that raise substantial doubt. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and interim periods within annual periods beginning after December 15, 2016. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements or Disclosures. Use of and Changes in Estimates The Company’s construction business involves making significant estimates and assumptions in the normal course of business relating to its contracts and its joint venture contracts. Management focuses on evaluating the performance of contracts individually. These estimates can vary in the normal course of business as projects progress, when estimated productivity assumptions change based on experience to date and uncertainties are resolved. Change orders and claims, as well as changes in related estimates of costs to complete, are considered revisions in estimates. The Company uses the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. The impact on operating margin in a reporting period and future periods from a change in estimate will depend on the stage of contract completion. During the three and nine months ended September 30, 2014, the Company's results of operations were impacted by $15.8 million and $30.6 million, respectively, because of changes in the estimated recoveries on two Civil segment projects driven by changes in cost recovery assumptions based on certain legal rulings issued during the second quarter of 2014, as well as agreements reached with our customer, which resulted in a $14.1 million increase in the third quarter of 2014 in the estimated recovery projected for a Building segment project. With respect to the two Civil segment projects, during the nine months ended September 30, 2014, there was a $25.9 million favorable increase and a $9.4 million unfavorable decrease. These changes in estimates resulted in increases of $15.8 million and $30.6 million in income from construction operations, increases of $9.5 million and $18.3 million in net income, and $0.19 and $0.37 in diluted earnings per share during the three and nine months ended September 30, 2014, respectively. During the three and nine months ended September 30, 2013, the Company’s results of operations were impacted by $9.7 million and $11.5 million, respectively, of increases in the estimated recovery projected for a Building segment project due to changes in facts and circumstances that occurred during those periods. These changes in estimates resulted in increases of $9.7 million and $11.5 million in income from construction operation, $6.2 million and $7.2 million in net income and $0.13 and $0.15 in diluted earnings per share during the three and nine months ended September 30, 2013, respectively. These changes were the only changes in estimates considered material to the Company's results of operations during the periods presented herein.

(2) Significant Accounting Policies

The significant accounting policies followed by the Company and its subsidiaries in preparing its consolidated financial statements are set forth in Note 1 to such financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.

Recently Issued Accounting Pronouncements

In February 2013, the FASB issued ASU 2013-04 Liabilities (Topic 405), which provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date. This ASU is an update to FASB ASC Topic 405, “Liabilities”. The amendments in this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this guidance did not have a material impact on the Company’s financial statements.

In July 2013, the FASB issued ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (a consensus of the Emerging Issues Task Force). This ASU addresses when unrecognized tax benefits should be presented as reductions to deferred tax assets for net operating loss carryforwards in the financial statements. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this guidance did not have a material impact on the Company’s financial statements.

In April 2014, the FASB issued FASB ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. The amendments in this update require a disposal of a component of an entity or a group of components of an entity to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. This ASU expands disclosure requirements about discontinued operations and adds new disclosures for individually significant dispositions that do not qualify as discontinued operations. ASU 2014-08 is effective prospectively for annual periods beginning on or after December 15, 2014, and interim periods within annual periods beginning on or after December 15, 2015. Early adoption is permitted, but only for disposals that have not been reported in financial statements previously issued. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements.

In May 2014, the FASB issued FASB ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition. This ASU addresses when an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period, using one of two retrospective application methods. Early application is not permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements.

In June 2014, the FASB issued ASU No. 2014-12, Compensation — Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period, clarifying the recognition timing of expense associated with certain performance based stock awards when the performance target that affects vesting could be achieved after the requisite service period. This ASU is an update to FASB ASC Topic 718 and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015 with earlier adoption permitted. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements.

In August 2014, the FASB issued FASB ASU No. 2014-15, Presentation of Financial Statements— Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The amendments in this update define management’s responsibility under GAAP to evaluate when and how substantial doubt about the organization’s ability to continue as a going concern should be disclosed in the financial statement footnotes. This ASU expands disclosure requirements about principal conditions or events that raise substantial doubt. It also requires disclosing management’s evaluation of the significance of those conditions or events in relationship to the organization’s ability to meet its obligations, and management’s plans that are intended to either alleviate substantial doubt or to mitigate conditions or events that raise substantial doubt. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and interim periods within annual periods beginning after December 15, 2016. The adoption of this guidance is not expected to have a material impact on the Company’s financial statements or Disclosures.

Use of and Changes in Estimates

The Company’s construction business involves making significant estimates and assumptions in the normal course of business relating to its contracts and its joint venture contracts. Management focuses on evaluating the performance of contracts individually. These estimates can vary in the normal course of business as projects progress, when estimated productivity assumptions change based on experience to date and uncertainties are resolved. Change orders and claims, as well as changes in related estimates of costs to complete, are considered revisions in estimates. The Company uses the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. The impact on operating margin in a reporting period and future periods from a change in estimate will depend on the stage of contract completion.

During the three and nine months ended September 30, 2014, the Company's results of operations were impacted by $15.8 million and $30.6 million, respectively, because of changes in the estimated recoveries on two Civil segment projects driven by changes in cost recovery assumptions based on certain legal rulings issued during the second quarter of 2014, as well as agreements reached with our customer, which resulted in a $14.1 million increase in the third quarter of 2014 in the estimated recovery projected for a Building segment project. With respect to the two Civil segment projects, during the nine months ended September 30, 2014, there was a $25.9 million favorable increase and a $9.4 million unfavorable decrease. These changes in estimates resulted in increases of $15.8 million and $30.6 million in income from construction operations, increases of $9.5 million and $18.3 million in net income, and $0.19 and $0.37 in diluted earnings per share during the three and nine months ended September 30, 2014, respectively.

During the three and nine months ended September 30, 2013, the Company’s results of operations were impacted by $9.7 million and $11.5 million, respectively, of increases in the estimated recovery projected for a Building segment project due to changes in facts and circumstances that occurred during those periods. These changes in estimates resulted in increases of $9.7 million and $11.5 million in income from construction operation, $6.2 million and $7.2 million in net income and $0.13 and $0.15 in diluted earnings per share during the three and nine months ended September 30, 2013, respectively.

These changes were the only changes in estimates considered material to the Company's results of operations during the periods presented herein.