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