Revisions in Estimates Revisions in Estimates (Policies)	9 Months Ended
Sep. 30, 2014
Revisions in Estimates [Abstract]
Revision in Estimate	Our profit recognition related to construction contracts is based on estimates of costs to complete each project. These estimates can vary significantly in the normal course of business as projects progress, circumstances develop and evolve, and uncertainties are resolved. We recognize revenue on affirmative claims when we have a signed agreement and recognize revenue associated with unapproved change orders to the extent the related costs have been incurred, the amount can be reliably estimated and recovery is probable. We recognize costs associated with affirmative claims and unapproved change orders as incurred and revisions to estimated total costs as soon as the obligation to perform is determined. Approved change orders and affirmative claims, as well as changes in related estimates of costs to complete, are considered revisions in estimates. We use the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. Under this method, revisions in estimates are accounted for in their entirety in the period of change. There can be no assurance that we will not experience further changes in circumstances or otherwise be required to further revise our profitability estimates. For the majority of our contracts, revenue in an amount equal to cost incurred is recognized until there is sufficient information to determine the estimated profit on the project with a reasonable level of certainty.

Our profit recognition related to construction contracts is based on estimates of costs to complete each project. These estimates can vary significantly in the normal course of business as projects progress, circumstances develop and evolve, and uncertainties are resolved. We recognize revenue on affirmative claims when we have a signed agreement and recognize revenue associated with unapproved change orders to the extent the related costs have been incurred, the amount can be reliably estimated and recovery is probable. We recognize costs associated with affirmative claims and unapproved change orders as incurred and revisions to estimated total costs as soon as the obligation to perform is determined. Approved change orders and affirmative claims, as well as changes in related estimates of costs to complete, are considered revisions in estimates. We use the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. Under this method, revisions in estimates are accounted for in their entirety in the period of change. There can be no assurance that we will not experience further changes in circumstances or otherwise be required to further revise our profitability estimates.

For the majority of our contracts, revenue in an amount equal to cost incurred is recognized until there is sufficient information to determine the estimated profit on the project with a reasonable level of certainty.