Future Minimum Lease Commitments under Non-Cancelable Operating Leases and Minimum Rentals to be Received under Non-Cancelable Subleases (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014
Operating Leases
2014	$ 10,056
2015	35,654
2016	31,445
2017	28,882
2018	25,635
Thereafter	72,992
Operating Leases, Future Minimum Payments Due, Total	204,664
Sublease Income
2014	535
2015	2,414
2016	3,740
2017	3,832
2018	3,832
Thereafter	8,579
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Total	$ 22,932

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Operating Leases Future Minimum Payments Due In Five Years Future Minimum Sublease Rentals

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Operating Leases Future Minimum Payments Due In Four Years Future Minimum Sublease Rentals

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Operating Leases Future Minimum Payments Due In Three Years Future Minimum Sublease Rentals

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Operating Leases Future Minimum Payments Due In Two Years Future Minimum Sublease Rentals

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Operating Leases Future Minimum Payments Due Remainder Future Minimum Sublease Rentals

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Operating Leases Future Minimum Payments Due Thereafter Future Minimum Sublease Rentals

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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