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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 17, 2020 | Nov. 28, 2020 | Nov. 28, 2020 | Nov. 23, 2019 | Oct. 22, 2020 | Jul. 31, 2015
Stockholders' Equity Disclosure [Line Items] |  |  |  |  |  |
Purchase of common stock (in shares) |  | 0 | 0 |  |  |
Dividends payable (per share) |  |  |  |  | $ 0.14 |
Cash dividends paid |  |  | $ 9,059 | $ 8,581 |  |
Subsequent Event [Member] |  |  |  |  |  |
Stockholders' Equity Disclosure [Line Items] |  |  |  |  |  |
Cash dividends paid | $ 4,500 |  |  |  |  |
July 2015 Program [Member] |  |  |  |  |  |
Stockholders' Equity Disclosure [Line Items] |  |  |  |  |  |
Amount authorized under a stock repurchase program |  |  |  |  |  | $ 150,000
Stock repurchase plan, remaining amount |  | $ 85,100 | $ 85,100 |  |  |

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