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Note 5 - Divestitures (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Revenue from Contract with Customer, Including Assessed Tax | $ 172,216 | $ 155,474 | $ 479,797 | $ 465,150
Proceeds from Divestiture of Businesses |  |  | 11,678 | 0
Gain (Loss) on Disposition of Business | (14,624) | (0) | (14,624) | (0)
Goodwill, Impairment Loss |  |  | 7,600 |
Enginetics Corporation [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |
Proceeds from Divestiture of Businesses | 11,700 |  |  |
Gain (Loss) on Disposition of Business | (14,600) |  |  |
Engineering Technologies Group [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 19,951 | $ 26,730 | 55,091 | $ 77,869
Goodwill, Impairment Loss | 7,600 |  | 7,600 |
Impairment of Intangible Assets (Excluding Goodwill), Total | $ 5,400 |  |  |
Engineering Technologies Group [Member] | Enginetics Corporation [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  | $ 9,000 |

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