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Disclosure - Contract Assets and Liabilities - Contracts in process (Details) link:presentationLink link:calculationLink link:definitionLink 40306 - Disclosure - Contract Assets and Liabilities - Summary of net asset position for contracts in process (Details) link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Lease Obligations - Summary of lease-related assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 40404 - Disclosure - Lease Obligations - Summary of lease related costs (Details) link:presentationLink link:calculationLink link:definitionLink 40406 - Disclosure - Lease Obligations - Schedule of future minimum lease payments (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Debt - Summary of total debt (Details) link:presentationLink link:calculationLink link:definitionLink 40603 - Disclosure - Debt - Schedule of remaining principal payments for long term obligations (Details) link:presentationLink link:calculationLink link:definitionLink 41301 - Disclosure - Earnings Per Share - Summary of weighted average number of common shares used to compute basic and dilute earnings per share (Details) link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 40101 - Disclosure - Organization, Business and Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 40201 - Disclosure - Acquisitions - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 40203 - Disclosure - Acquisitions - Summary of supplemental pro forma financial information (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Lease Obligations - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 40602 - Disclosure - Debt - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - 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Disclosure - Segment Information - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 41102 - Disclosure - Segment Information - Summary of segment's internal financial reports (Details) link:presentationLink link:calculationLink link:definitionLink 41201 - Disclosure - Noncontrolling Interest (Details) link:presentationLink link:calculationLink link:definitionLink 41302 - Disclosure - Earnings Per Share - Summary of shared excluded from calculation of dilute securities (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - UNAUDITED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Organization, Business and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Contract Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Lease Obligations link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Noncontrolling Interest link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 20202 - Disclosure - Organization, Business and Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 30203 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Contract Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Lease Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 30603 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 31103 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 31303 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 40304 - Disclosure - Contract Assets and Liabilities - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Lease Obligations - Summary of the lease terms and discount rates (Details) link:presentationLink link:calculationLink link:definitionLink 40405 - Disclosure - Lease Obligations - Summary of other and supplemental cash flow information related to leases (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink