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Business Segment Information (Net Sales To Major Customers) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ 323,670 | $ 317,882 | $ 349,581 | $ 316,654 | $ 308,170 | $ 296,174 | $ 319,665 | $ 298,916 | $ 1,307,787 | [1],[2] | $ 1,222,925 | [1],[2] | $ 1,201,842 | [1],[2]
Retail [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | [1],[2] |  |  |  |  |  |  |  |  | 656,621 |  | 650,234 |  | 641,417 |
Retail [Member] | Walmart Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | $ 222,171 |  | $ 209,860 |  | $ 201,484 |
Retail [Member] | Customer Concentration Risk [Member] | Walmart Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales as a percentage of consolidated net sales |  |  |  |  |  |  |  |  |  | 17.00% |  | 17.00% |  | 17.00% |
Foodservice [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | [1],[2] |  |  |  |  |  |  |  |  | $ 651,166 |  | $ 572,691 |  | $ 560,425 |
Foodservice [Member] | McLane Company Inc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | $ 195,907 |  | $ 185,226 |  | $ 198,153 |
Foodservice [Member] | Customer Concentration Risk [Member] | McLane Company Inc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales as a percentage of consolidated net sales |  |  |  |  |  |  |  |  |  | 15.00% |  | 15.00% |  | 16.00% |
[1] | All intercompany transactions have been eliminated.
[2] | Net sales and long-lived assets are predominately domestic.

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