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Summary of Significant Accounting Policies and New Accounting Standards (Tables) | 12 Months Ended
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Jun. 30, 2017
Accounting Policies [Abstract] |
Schedule of Net Income per Share and Weighted Average Shares |
For the Years Ended June 30 |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Net income |  |  |  | $ | 64,615 |  |  |  |  | $ | 82,728 |  |  |  |  | $ | 60,280 |  |
Weighted average number of shares–basic |  |  |  |  | 39,524 |  |  |  |  |  | 39,254 |  |  |  |  |  | 38,969 |  |
Dilutive effect of stock options |  |  |  |  | 518 |  |  |  |  |  | 708 |  |  |  |  |  | 846 |  |
Weighted average number of shares–diluted |  |  |  |  | 40,042 |  |  |  |  |  | 39,962 |  |  |  |  |  | 39,815 |  |
Net income per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
basic |  |  |  | $ | 1.63 |  |  |  |  | $ | 2.11 |  |  |  |  | $ | 1.55 |  |
diluted |  |  |  | $ | 1.61 |  |  |  |  | $ | 2.07 |  |  |  |  | $ | 1.51 |  |

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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://www.xbrl.org/2003/role/presentationRef -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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