Annual report pursuant to Section 13 and 15(d)

Company And Summary Of Significant Accounting Policies - Summary of Estimated Useful Lives of Property, Plant and Equipment (Detail)

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Company And Summary Of Significant Accounting Policies - Summary of Estimated Useful Lives of Property, Plant and Equipment (Detail)
12 Months Ended
Dec. 31, 2012
Buildings [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated useful lives 20 years
Building improvements [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated useful lives 10 years
Furniture, fixtures and equipment [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated useful lives 5 to 20 years
Leasehold improvements [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated useful lives Useful life or remaining lease term, whichever is shorter