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Components of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Deferred Tax Assets And Liabilities [Line Items] |  |
Deferred tax assets, Allowance for doubtful accounts | $ 9,204 | $ 8,886
Deferred tax assets, Accrued vacation and bonus | 8,016 | 6,631
Deferred tax assets, Deferred rent | 16,137 | 17,354
Deferred tax assets, Share-based compensation | 23,730 | 25,948
Deferred tax assets, Notes receivable from employees | 27,791 | 27,900
Deferred tax assets, State net operating loss carryforward & credits | 1,921 | 2,943
Deferred tax assets, Foreign net operating loss carryforward | 7,976 | 2,585
Deferred tax assets, Foreign tax credits | 1,253 |
Deferred tax assets, Future foreign tax credit asset | 8,406 | 8,603
Deferred tax assets, Other-net | 4,783 | 5,291
Total deferred tax assets | 109,217 | 106,141
Deferred tax liabilities, Revenue recognition | (19,706) | (33,462)
Deferred tax liabilities, Property, equipment and capitalized software | (819) | (1,383)
Deferred tax liabilities, Goodwill and other intangible asset amortization | (188,737) | (169,471)
Deferred tax liabilities, Deferred compensation | (152) |
Deferred tax liabilities, Discount on long term debt |  | (1,264)
Total deferred tax liabilities | (209,414) | (205,580)
Valuation allowance | (1,939) | (886)
Net deferred tax assets (liabilities) | $ (102,136) | $ (100,325)

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