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Segment Data - Geographic Sales Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
External Sales [Abstract] |  |  |
Total External Sales | $ 2,058,368 | $ 2,098,436 | $ 2,647,195
Total Assets [Abstract] |  |  |
Assets | 2,415,496 | 2,362,783 | 2,843,655
UNITED STATES |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 897,326 | 897,399 | 1,176,622
Total Assets [Abstract] |  |  |
Assets | 1,075,444 | 1,069,320 | 1,332,720
GERMANY |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 282,347 | 334,366 | 442,009
Total Assets [Abstract] |  |  |
Assets | 347,226 | 327,679 | 394,491
CHINA |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 220,561 | 210,124 | 246,953
Total Assets [Abstract] |  |  |
Assets | 239,908 | 233,200 | 274,774
ITALY |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 59,967 | 69,821 | 85,530
Total Assets [Abstract] |  |  |
Assets | 48,990 | 50,352 | 94,978
FRANCE |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 56,231 | 56,264 | 59,772
UNITED KINGDOM |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 39,731 | 50,723 | 70,600
Total Assets [Abstract] |  |  |
Assets | 48,729 | 48,507 | 71,342
INDIA |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 84,769 | 77,934 | 85,193
Total Assets [Abstract] |  |  |
Assets | 98,602 | 91,544 | 97,463
CANADA |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 56,628 | 55,812 | 73,912
Total Assets [Abstract] |  |  |
Assets | 58,337 | 57,174 | 60,492
Other |  |  |
External Sales [Abstract] |  |  |
Total External Sales | 360,808 | 345,993 | 406,604
Total Assets [Abstract] |  |  |
Assets | 300,477 | 295,509 | 323,256
SWITZERLAND |  |  |
Total Assets [Abstract] |  |  |
Assets | $ 197,783 | $ 189,498 | $ 194,139

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