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Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Net income	$ 26,586	$ 34,939
Denominator:
Shares, basic	36,998	32,958
Effect of dilutive share-based awards	2,229	2,062
Shares, diluted	39,227	35,020
Net income per share:
Basic	$ 0.72	$ 1.06
Diluted	$ 0.68	$ 1.00

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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