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Retirement Benefits (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Value of Company Stock Contributed to Defined Contribution Benefit Plans | $ 12,574 | $ 11,193 | $ 12,574 | $ 11,193
Treasury Stock Issued During Period, Shares, Employee Benefit Plans | 259 | 260 |  |
Business Acquisition, Acquiree - Duarte Business [Member] |  |  |  |
Pension and Other Postretirement Defined Benefit Plans Liabilities |  |  | 80 |
Treasury Stock at Cost [Member] |  |  |  |
Value of Company Stock Contributed to Defined Contribution Benefit Plans |  |  | $ 8,084 | $ 8,356
Treasury Stock Issued During Period, Shares, Employee Benefit Plans |  |  | 259 | 260

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