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Business Segment Information (Net Sales To Major Customers) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2014
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 284,490 | $ 287,765 | $ 324,769 | $ 294,085 | $ 277,716 | $ 263,400 | $ 303,411 | $ 259,987 | $ 1,191,109 | $ 1,104,514 | $ 1,041,075
McLane Company Inc [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 232,241 | 202,218 | 186,817
Wal-Mart Stores, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 189,417 | $ 177,354 | $ 175,388
Customer Concentration Risk [Member] | McLane Company Inc [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales as a percentage of consolidated net sales |  |  |  |  |  |  |  |  | 19.00% | 18.00% | 18.00%
Customer Concentration Risk [Member] | Wal-Mart Stores, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales as a percentage of consolidated net sales |  |  |  |  |  |  |  |  | 16.00% | 16.00% | 17.00%

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