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Summary of Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Net loss	$ 251	$ 3
Settlement loss	(65)
Amortization of net loss	(28)	(33)
Total recognized in other comprehensive income (loss)	158	(30)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 223	$ (25)

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Amount before tax, after reclassification adjustments, of actuarial gain (loss) that has not been recognized in the income statement.

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