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Acquisitions Pro Forma (Details) - Houston Interests, LLC [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Revenues | $ 251,237 | $ 334,228 | $ 941,536 | $ 1,047,246
Net income attributable to Matrix Service Company | $ (13,202) | $ 4,113 | $ 5,231 | $ 22,623
Basic earnings per common share | $ (0.50) | $ 0.15 | $ 0.20 | $ 0.85
Diluted earnings per common share | $ (0.50) | $ 0.15 | $ 0.19 | $ 0.83

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