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Basis of Presentation - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2013
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Dec. 31, 2012
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|---|---|---|
| Basis Of Preparation [Line Items] | ||
| Increase (decrease) in total assets | $ 3,657,457 | $ 3,131,865 |
| Increase (decrease) in total liabilities | 2,755,829 | 2,292,272 |
| Increase (decrease) in total liabilities and stockholders' equity | 3,657,457 | 3,131,865 |
| Notes outstanding, carrying value | 400,000 | 0 |
| Notes outstanding, fair value | 360,000 | |
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Restatement Adjustment - Error Correction
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| Basis Of Preparation [Line Items] | ||
| Increase (decrease) in deferred income tax assets | 18,407 | |
| Increase (decrease) in total assets | 18,407 | |
| Increase (decrease) in deferred tax liabilities | 18,407 | |
| Increase (decrease) in total liabilities | 18,407 | |
| Increase (decrease) in total liabilities and stockholders' equity | $ 18,407 |
| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value portion of notes payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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