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Income Taxes - Additional Information (Detail)
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3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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| Income Taxes [Line Items] | ||||
| Statutory federal corporate income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
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Tax-sharing agreement [Member]
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| Income Taxes [Line Items] | ||||
| Percentage of tax-sharing agreement | 43.50% | |||
| Agreement termination date | Oct. 31, 2013 | |||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tax sharing agreement termination date. No definition available.
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| X | ||||||||||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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