Basis of Presentation (Notes)	9 Months Ended
Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation and Accounting Policies The condensed consolidated financial statements include the accounts of Matrix Service Company (“Matrix”, “we”, “our”, “us”, “its” or the “Company”) and its subsidiaries, unless otherwise indicated. Intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the Securities and Exchange Commission and do not include all information and footnotes required by generally accepted accounting principles for complete financial statements. The information furnished reflects all adjustments, consisting of normal recurring adjustments and other adjustments described herein, that are, in the opinion of management, necessary for a fair statement of the results of operations, cash flows and financial position for the interim periods presented. The accompanying condensed financial statements should be read in conjunction with the audited financial statements for the year ended June 30, 2015, included in the Company’s Annual Report on Form 10-K for the year then ended. The results of operations for the nine month period ended March 31, 2016 may not necessarily be indicative of the results of operations for the full year ending June 30, 2016. Recently Issued Accounting Standards Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) On May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09. The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that “an entity recognizes 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.” The ASU also requires entities to disclose both quantitative and qualitative information that enables users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The ASU's disclosure requirements are significantly more comprehensive than those in existing revenue standards. The ASU applies to all contracts with customers except those that are within the scope of other topics in the FASB Accounting Standards Codification ("ASC"). In July 2015, the FASB deferred the effective date of ASU 2014-09 by one year. With the deferral, this ASU is now effective for annual reporting periods beginning after December 15, 2017, with early adoption now permitted on a limited basis. Upon adoption, the Company may elect one of two application methods, a full retrospective application or a modified retrospective application. We expect to adopt this standard on July 1, 2018 and are currently evaluating its expected impact on our financial statements. Accounting Standards Update 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments On September 25, 2015, the FASB issued ASU 2015-16 to simplify the accounting for measurement-period adjustments. The ASU was issued in response to stakeholder feedback that restatements of prior periods to reflect adjustments made to provisional amounts recognized in a business combination increase the cost and complexity of financial reporting but do not significantly improve the usefulness of the information. Under the ASU, an acquirer must recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The ASU also requires acquirers to present separately on the face of the income statement, or disclose in the notes, the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. We expect to adopt this standard on July 1, 2016. Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes On November 20, 2015, the FASB issued ASU 2015-17, which will require entities to present deferred tax assets ("DTAs") and deferred tax liabilities ("DTLs") as noncurrent in a classified balance sheet. The ASU simplifies the current guidance, which requires entities to separately present DTAs and DTLs as current and noncurrent in a classified balance sheet based on the classification of the related asset or liability. For public business entities, the ASU will be effective for annual periods beginning after December 15, 2016, and interim periods within those years with early adoption permitted. The Company has elected to retrospectively early adopt ASU 2015-17, effective for the quarter ended December 31, 2015. The quantitative effects of the change on the prior balance sheet presented, for the fiscal year ended June 30, 2015, resulted in a net reclassification of $6.6 million and $6.6 million from the "Deferred income taxes" current asset and liability financial statement line items, respectively, to the "Deferred income taxes" asset and liability financial statement line items included in the noncurrent asset and liability sections of the balance sheet. Accounting Standards Update 2016-02, Leases (Topic 842) On February 25, 2016, the FASB issued ASU 2016-02. The amendments in this update require, among other things, that lessees recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Lessees and lessors must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We expect to adopt this standard on July 1, 2019 and are currently evaluating its expected impact on our financial statements. Accounting Standards Update 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting On March 30, 2016, the FASB issued ASU 2016-09, which simplified several aspects of accounting for stock-based compensation transactions, including the accounting for income taxes and forfeitures and statutory tax withholding requirements. The ASU is effective for the Company on July 1, 2017 and early adoption is permitted. The Company is currently evaluating whether it will early adopt the ASU. The following is a description of the key provisions of the ASU, its transition requirements and its estimated impacts on the Company's financial statements: Accounting for Income Taxes: The amendments require the Company to recognize excess tax benefits or tax deficiencies in its provision for income taxes in its consolidated statements of income during the period of vesting or exercise of its nonvested deferred share awards and stock options, respectively, for which it expects to receive an income tax deduction. Currently, the Company recognizes any excess tax benefits in additional paid-in capital ("APIC") in the balance sheet and any tax deficiencies are recognized as a reduction of APIC to the extent the Company has accumulated excess tax benefits. Any tax deficiencies in excess of accumulated excess tax benefits in APIC are recognized in the provision for income taxes. The amendments also require the Company to only present excess tax benefits and tax deficiencies in the operating section of its statements of cash flows. Currently, the Company is required to present such items in both the financing section and operating section of its statements of cash flows. Amendments to the presentation of excess tax benefits and tax deficiencies in the statements of cash flows may be applied retrospectively or prospectively. The Company has not yet determined how it will apply these amendments. Amendments requiring the recognition of excess tax benefits and tax deficiencies in income are to be applied prospectively. The Company cannot reasonably estimate the future impacts of these amendments to its financial statements since such impacts are primarily dependent on the Company's stock price on the dates of future vestings or exercises. The Company's stock price may vary significantly over time and such variability may result in material income tax impacts to income upon future vestings and exercises. The Company is required to apply the amendments for accumulated excess tax benefits on a modified retrospective basis as a cumulative-effect adjustment to retained earnings as of the date of adoption. The balance of accumulated excess tax benefits included in APIC was $9.8 million as of March 31, 2016. Accounting for Forfeitures: The Company currently recognizes expense on all stock-based awards over the requisite service period, net of estimated forfeitures. The amendments in this ASU allow the Company to elect, as a company-wide accounting policy, either to continue to estimate the amount of forfeitures to exclude from compensation expense or to exclude forfeitures from compensation expense when they occur. If the Company elects to account for forfeitures when they occur, it will apply the accounting change on a modified retrospective basis as a cumulative-effect adjustment to retained earnings as of the date of adoption. The Company does not expect these amendments to have a material impact to its financial statements if it does elect to account for forfeitures when they occur. The Company has not yet determined how it will account for forfeitures upon adoption of the ASU. Statutory Tax Withholding Requirements: Currently, an entire award must be classified as a liability if the fair value of the shares withheld exceeds the Company's minimum statutory withholding obligation. Under the ASU, the Company will be allowed to withhold shares with a fair value up to the amount of tax owed using the maximum statutory tax rate in the employee's applicable jurisdictions. The Company will be allowed to determine one maximum rate for all employees in each jurisdiction, rather than a rate for each employee in the jurisdiction. Also, the ASU requires that cash outflows to reacquire shares withheld for taxes to be classified in the financing section of its statements of cash flows. Since the Company does not have any awards classified as liabilities due to statutory tax withholding requirements as of March 31, 2016, and since the Company already presents its cash outflows for reacquiring shares withheld for taxes as a financing activity in its statements of cash flows, the Company does not expect these amendments to have any impact on its financial statements.

Basis of Presentation and Accounting Policies

The condensed consolidated financial statements include the accounts of Matrix Service Company (“Matrix”, “we”, “our”, “us”, “its” or the “Company”) and its subsidiaries, unless otherwise indicated. Intercompany balances and transactions have been eliminated in consolidation.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the Securities and Exchange Commission and do not include all information and footnotes required by generally accepted accounting principles for complete financial statements. The information furnished reflects all adjustments, consisting of normal recurring adjustments and other adjustments described herein, that are, in the opinion of management, necessary for a fair statement of the results of operations, cash flows and financial position for the interim periods presented. The accompanying condensed financial statements should be read in conjunction with the audited financial statements for the year ended June 30, 2015, included in the Company’s Annual Report on Form 10-K for the year then ended. The results of operations for the nine month period ended March 31, 2016 may not necessarily be indicative of the results of operations for the full year ending June 30, 2016.

Recently Issued Accounting Standards

Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606)

On May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09. The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that “an entity recognizes 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.” The ASU also requires entities to disclose both quantitative and qualitative information that enables users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The ASU's disclosure requirements are significantly more comprehensive than those in existing revenue standards. The ASU applies to all contracts with customers except those that are within the scope of other topics in the FASB Accounting Standards Codification ("ASC").

In July 2015, the FASB deferred the effective date of ASU 2014-09 by one year. With the deferral, this ASU is now effective for annual reporting periods beginning after December 15, 2017, with early adoption now permitted on a limited basis. Upon adoption, the Company may elect one of two application methods, a full retrospective application or a modified retrospective application. We expect to adopt this standard on July 1, 2018 and are currently evaluating its expected impact on our financial statements.

Accounting Standards Update 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments

On September 25, 2015, the FASB issued ASU 2015-16 to simplify the accounting for measurement-period adjustments. The ASU was issued in response to stakeholder feedback that restatements of prior periods to reflect adjustments made to provisional amounts recognized in a business combination increase the cost and complexity of financial reporting but do not significantly improve the usefulness of the information. Under the ASU, an acquirer must recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The ASU also requires acquirers to present separately on the face of the income statement, or disclose in the notes, the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. We expect to adopt this standard on July 1, 2016.

Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes

On November 20, 2015, the FASB issued ASU 2015-17, which will require entities to present deferred tax assets ("DTAs") and deferred tax liabilities ("DTLs") as noncurrent in a classified balance sheet. The ASU simplifies the current guidance, which requires entities to separately present DTAs and DTLs as current and noncurrent in a classified balance sheet based on the classification of the related asset or liability. For public business entities, the ASU will be effective for annual periods beginning after December 15, 2016, and interim periods within those years with early adoption permitted. The Company has elected to retrospectively early adopt ASU 2015-17, effective for the quarter ended December 31, 2015. The quantitative effects of the change on the prior balance sheet presented, for the fiscal year ended June 30, 2015, resulted in a net reclassification of $6.6 million and $6.6 million from the "Deferred income taxes" current asset and liability financial statement line items, respectively, to the "Deferred income taxes" asset and liability financial statement line items included in the noncurrent asset and liability sections of the balance sheet.

Accounting Standards Update 2016-02, Leases (Topic 842)

On February 25, 2016, the FASB issued ASU 2016-02. The amendments in this update require, among other things, that lessees recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Lessees and lessors must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We expect to adopt this standard on July 1, 2019 and are currently evaluating its expected impact on our financial statements.

Accounting Standards Update 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting

On March 30, 2016, the FASB issued ASU 2016-09, which simplified several aspects of accounting for stock-based compensation transactions, including the accounting for income taxes and forfeitures and statutory tax withholding requirements. The ASU is effective for the Company on July 1, 2017 and early adoption is permitted. The Company is currently evaluating whether it will early adopt the ASU. The following is a description of the key provisions of the ASU, its transition requirements and its estimated impacts on the Company's financial statements:

Accounting for Income Taxes: The amendments require the Company to recognize excess tax benefits or tax deficiencies in its provision for income taxes in its consolidated statements of income during the period of vesting or exercise of its nonvested deferred share awards and stock options, respectively, for which it expects to receive an income tax deduction. Currently, the Company recognizes any excess tax benefits in additional paid-in capital ("APIC") in the balance sheet and any tax deficiencies are recognized as a reduction of APIC to the extent the Company has accumulated excess tax benefits. Any tax deficiencies in excess of accumulated excess tax benefits in APIC are recognized in the provision for income taxes. The amendments also require the Company to only present excess tax benefits and tax deficiencies in the operating section of its statements of cash flows. Currently, the Company is required to present such items in both the financing section and operating section of its statements of cash flows. Amendments to the presentation of excess tax benefits and tax deficiencies in the statements of cash flows may be applied retrospectively or prospectively. The Company has not yet determined how it will apply these amendments.

Amendments requiring the recognition of excess tax benefits and tax deficiencies in income are to be applied prospectively. The Company cannot reasonably estimate the future impacts of these amendments to its financial statements since such impacts are primarily dependent on the Company's stock price on the dates of future vestings or exercises. The Company's stock price may vary significantly over time and such variability may result in material income tax impacts to income upon future vestings and exercises.

The Company is required to apply the amendments for accumulated excess tax benefits on a modified retrospective basis as a cumulative-effect adjustment to retained earnings as of the date of adoption. The balance of accumulated excess tax benefits included in APIC was $9.8 million as of March 31, 2016.

Accounting for Forfeitures: The Company currently recognizes expense on all stock-based awards over the requisite service period, net of estimated forfeitures. The amendments in this ASU allow the Company to elect, as a company-wide accounting policy, either to continue to estimate the amount of forfeitures to exclude from compensation expense or to exclude forfeitures from compensation expense when they occur. If the Company elects to account for forfeitures when they occur, it will apply the accounting change on a modified retrospective basis as a cumulative-effect adjustment to retained earnings as of the date of adoption. The Company does not expect these amendments to have a material impact to its financial statements if it does elect to account for forfeitures when they occur. The Company has not yet determined how it will account for forfeitures upon adoption of the ASU.

Statutory Tax Withholding Requirements: Currently, an entire award must be classified as a liability if the fair value of the shares withheld exceeds the Company's minimum statutory withholding obligation. Under the ASU, the Company will be allowed to withhold shares with a fair value up to the amount of tax owed using the maximum statutory tax rate in the employee's applicable jurisdictions. The Company will be allowed to determine one maximum rate for all employees in each jurisdiction, rather than a rate for each employee in the jurisdiction. Also, the ASU requires that cash outflows to reacquire shares withheld for taxes to be classified in the financing section of its statements of cash flows. Since the Company does not have any awards classified as liabilities due to statutory tax withholding requirements as of March 31, 2016, and since the Company already presents its cash outflows for reacquiring shares withheld for taxes as a financing activity in its statements of cash flows, the Company does not expect these amendments to have any impact on its financial statements.