Future Minimum Lease Payments For Operating And Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Leases Future Minimum Payments [Line Items]
Future minimum lease payments for operating lease for year 2013	$ 14,078
Future minimum lease payments for operating lease for year 2014	8,543
Future minimum lease payments for operating lease for year 2015	6,048
Future minimum lease payments for operating lease for year 2016	3,221
Future minimum lease payments for operating lease for year 2017	2,347
Future minimum lease payments for operating lease for year 2018 and thereafter	7,114
Future minimum lease payments for capital lease for year 2013	578
Future minimum lease payments for capital lease for year 2014	562
Future minimum lease payments for capital lease for year 2015	561
Future minimum lease payments for capital lease for year 2016	560
Future minimum lease payments for capital lease for year 2017	1,155
Future minimum lease payments for capital lease for year 2018 and thereafter	$ 100

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing after the fifth fiscal year following the latest fiscal year for capital leases.

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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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