Future Minimum Rental Commitments for Non-Cancellable Operating Leases (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Operating Leased Assets [Line Items]
Future minimum rental commitments, 2013	$ 87,800
Future minimum rental commitments, 2014	84,400
Future minimum rental commitments, 2015	79,800
Future minimum rental commitments, 2016	72,300
Future minimum rental commitments, 2017	66,700
Future minimum rental commitments, Thereafter	$ 258,100

Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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