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Pro-forma Results of Acquisitions (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013
Business Acquisition, Pro Forma Information [Line Items] |  |
Revenue | $ 807,509 | $ 619,835
Income from operations | 252,634 | 177,998
Net income | $ 155,924 | $ 108,024
Net income per share, basic | $ 2.06 | $ 1.33
Net income per share, diluted | $ 1.99 | $ 1.30

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