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ACQUISITION ACTIVITY - Explosive Trace Detection (Details) - ETD - USD ($) $ in Millions |  | 12 Months Ended
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Jul. 07, 2017 | Jun. 30, 2018
ACQUISITION ACTIVITY |  |
Total purchase price | $ 80.5 |
Revenue since acquisition date |  | $ 76.5
Income from operation since acquisition date |  | $ 10.7

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