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Summary of Significant Accounting Policies - Useful Lives of Various Property and Equipment (Detail)
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12 Months Ended |
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Dec. 31, 2013
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Maximum [Member] | Buildings [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 30 years |
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Maximum [Member] | Leasehold Improvements [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 20 years |
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Maximum [Member] | Capitalized Software [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 10 years |
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Maximum [Member] | Furniture, Fixtures and Equipment [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 7 years |
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Minimum [Member] | Capitalized Software [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 3 years |
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Minimum [Member] | Furniture, Fixtures and Equipment [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property and Equipment Useful Life | 3 years |