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Variations from Federal Statutory Rate (Parenthetical) (Detail)
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12 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Reconciliation Of Income Taxes [Line Items] | |||
| Expected federal income tax expense (benefit), statutory rate | 34.00% | 34.00% | 34.00% |
| X | ||||||||||
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- Details
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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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