Business Acquisitions, Goodwill and Other Intangible Assets - Pro Forma Information (Details) - Pipeline Services - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Mar. 25, 2016	Mar. 27, 2015
Business Acquisition [Line Items]
Gross revenue	$ 526,384	$ 559,079
Net service revenue	383,374	406,712
Net (loss) income applicable to TRC Companies, Inc.	$ (8,368)	$ 6,483
Basic earnings per common share (in dollars per share)	$ (0.27)	$ 0.21
Diluted earnings per common share (in dollars per share)	$ (0.27)	$ 0.21

Business Acquisition, Pro Forma Sales Revenue, Net, Services

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

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