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Business Combinations - Revenue and Income (Details) - AS&E - USD ($) $ in Thousands | 3 Months Ended | 7 Months Ended | 9 Months Ended
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2017 | Mar. 31, 2016
Business Combinations |  |  |  |  |
Amount included in revenue | $ 27,700 |  | $ 70,900 |  |
Amount included in operating income | 4,900 |  | $ 4,700 |  |
Pro forma results of operations assume the AS&E acquisition had occurred on July 1, 2015 |  |  |  |  |
Revenues | 245,146 | $ 235,038 |  | $ 726,304 | $ 607,645
Income before taxes | 19,593 | $ 5,161 |  | 6,707 | $ 2,455
Non-recurring acquisition and employee termination costs | $ 400 |  |  | $ 13,600 |

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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 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=65885119&loc=d3e1392-128463 + Details
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