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Summary of Significant Accounting Policies and New Accounting Standards (Tables) | 12 Months Ended
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Jun. 30, 2018
Accounting Policies [Abstract] |
Schedule of net income per share and weighted average shares |
For the Year Ended June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Net income |  |  |  | $ | 64,883 |  |  |  |  | $ | 64,615 |  |  |  |  | $ | 82,728 |  |
Weighted average number of shares–basic |  |  |  |  | 40,181 |  |  |  |  |  | 39,524 |  |  |  |  |  | 39,254 |  |
Dilutive effect of stock options and restricted stock units |  |  |  |  | 204 |  |  |  |  |  | 518 |  |  |  |  |  | 708 |  |
Weighted average number of shares–diluted |  |  |  |  | 40,385 |  |  |  |  |  | 40,042 |  |  |  |  |  | 39,962 |  |
Net income per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
basic |  |  |  | $ | 1.61 |  |  |  |  | $ | 1.63 |  |  |  |  | $ | 2.11 |  |
diluted |  |  |  | $ | 1.61 |  |  |  |  | $ | 1.61 |  |  |  |  | $ | 2.07 |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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