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	Dec. 31, 2014
Operating Leases
2015	$ 36,280
2016	31,004
2017	28,593
2018	24,776
2019	20,885
Thereafter	50,851
Operating Leases, Future Minimum Payments Due, Total	192,389
Sublease Income
2015	2,229
2016	3,557
2017	3,654
2018	3,654
2019	3,654
Thereafter	4,526
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Total	$ 21,274

Operating Leases Future Minimum Payments Due Current Future Minimum Sublease Rentals

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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 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

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-Name Accounting Standards Codification

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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 next 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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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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