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Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Basic EPS:
Net income	$ 4,684	$ 3,509
Weighted average shares outstanding - basic	25,788	26,400
Basic EPS	$ 0.18	$ 0.13
Diluted EPS:
Weighted average shares outstanding-basic	25,788	26,400
Dilutive stock options	70	87
Dilutive nonvested deferred shares	290	235
Diluted weighted average shares	26,148	26,722
Diluted EPS	$ 0.18	$ 0.13

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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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