Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies (Future Minimum Lease Payments Due Under Non-Cancelable Operating Leases) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
2015	$ 21,373
2016	19,834
2017	18,503
2018	17,067
2019	13,269
Thereafter	77,000
Future minimum lease payments due, total	$ 167,046

Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies (Future Minimum Lease Payments Due Under Non-Cancelable Operating Leases) (Detail) (USD $)
In Thousands, unless otherwise specified

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

$ 21,373us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent

2016

19,834us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears

2017

18,503us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears

2018

17,067us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears

2019

13,269us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears

Thereafter

77,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter

Future minimum lease payments due, total

$ 167,046us-gaap_OperatingLeasesFutureMinimumPaymentsDue

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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- Definition

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.

+ References

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- Definition

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.

+ References

+ Details

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

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.

+ References

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