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Stockholders' Equity (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Equity, Class of Treasury Stock [Line Items] |  |  |
Preferred stock shares authorized | 5,000,000.0 | 5,000,000.0 |
Preferred stock shares issued | 0 | 0 |
Preferred stock shares outstanding | 0 | 0 |
Annual maximum purchases authorized under stock buyback program | $ 25,000 |  |
Payments for Repurchase of Common Stock | $ 0 | $ 0 | $ (10,461)
Treasury stock, shares | 1,034,394 | 1,287,655 |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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