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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Jun. 30, 2015
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Disclosures |
Year ended June 30 (in thousands) | 2015 |  |  | 2014 |  |  | 2013 |
Cash paid during the period for: |  |  |  |  |
Interest | $ | 30,984 |  |  | $ | 29,836 |  |  | $ | 24,432 |
Income taxes | 40,295 |  |  | 49,393 |  |  | 51,098 |
Supplemental disclosure of non-cash information: |  |  |  |  |
Changes in accounts payable related to purchases of property, plant and equipment | (9,900 | ) |  | 2,100 |  |  | (8,600 | )

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