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Selected Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales | $ 308,170 |  | $ 296,174 |  | $ 319,665 |  | $ 298,916 |  | $ 289,874 |  | $ 293,834 |  | $ 326,773 |  | $ 291,361 |  | $ 1,222,925 | [1],[2] | $ 1,201,842 | [1],[2] | $ 1,191,109 | [1],[2]
Gross Profit | 76,182 |  | 67,913 |  | 83,941 |  | 75,477 |  | 72,486 |  | 71,905 |  | 93,739 |  | 80,634 |  | 303,513 |  | 318,764 |  | 299,629 |
Net Income | $ 32,387 |  | $ 27,621 |  | $ 45,920 | [3] | $ 29,386 |  | $ 28,487 |  | $ 14,471 | [4] | $ 38,956 |  | $ 33,400 |  | $ 135,314 | [3] | $ 115,314 | [4] | $ 121,764 |
Diluted Net Income Per Common Share (in dollars per share) | $ 1.18 | [5] | $ 1.00 | [5] | $ 1.67 | [3],[5] | $ 1.07 | [5] | $ 1.04 | [5] | $ 0.53 | [4],[5] | $ 1.42 | [5] | $ 1.22 | [5] | $ 4.92 | [3],[5] | $ 4.20 | [4],[5] | $ 4.44 |
Quarterly charges and (credits), amount affecting comparability |  |  |  |  | $ (8,900) |  |  |  |  |  | $ 11,500 |  |  |  |  |  | $ (9,500) |  | $ 11,500 |  |  |
Quarterly charges and (credits), per share amount affecting comparability (in dollars per share) |  |  |  |  | $ (0.32) |  |  |  |  |  | $ 0.42 |  |  |  |  |  | $ (0.35) |  | $ 0.42 |  |  |
[1] | All intercompany transactions have been eliminated.
[2] | Net sales and long-lived assets are predominately domestic.
[3] | Included in the second quarter net income was the one-time preliminary deferred tax benefit of $8.9 million, or approximately $0.32 per diluted share, resulting from the Tax Act. The fiscal year impact was $9.5 million, or approximately $0.35 per diluted share.
[4] | Included in the third quarter and fiscal year net income was expense of $11.5 million, net of taxes, or approximately $0.42 per diluted share, related to a multiemployer pension settlement and other benefit-related costs.
[5] | Diluted net income per common share amounts are calculated independently for each of the quarters presented. Accordingly, the sum of the quarterly net income per common share amounts may not agree with the fiscal year.

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