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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Tax Contingency [Line Items] |  |  |  |
Effective income tax rate | 37.44% | 37.94% | 38.29% |
Excess tax benefits related to stock-based awards, which increased the cash flow from financing activities | $ 19,000,000 | $ 6,200,000 | $ 7,100,000 |
Net operating loss carryforwards for federal and state tax | 16,900,000 | 14,900,000 | 9,400,000 |
Expiration period of operating loss carryforwards | 2019 |  |  |
Company's total liability for uncertain tax positions | 14,902,000 | 13,072,000 | 16,165,000 | 22,290,000
Uncertain tax positions recognized would favorably impact its effective tax rate | 14,500,000 |  |  |
Increase in uncertain tax position | 1,800,000 |  |  |
Decrease in uncertain tax position |  | 3,100,000 |  |
Interest and penalties related to income tax liabilities |  | 300,000 | 400,000 |
Company's accrued liability for interest and penalties related to income tax liabilities | 8,400,000 | 9,000,000 |  |
Decrease of interest and penalties | 600,000 |  |  |
Accounts payable and accrued expenses | 23,300,000 | 22,100,000 |  |
Scenario, Forecast [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Increase in uncertain tax position | 3,800,000 |  |  |
Decrease in uncertain tax position | $ 1,500,000 |  |  |
Minimum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Federal and state income tax examinations | 2004 |  |  |
Maximum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Federal and state income tax examinations | 2012 |  |  |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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