Annual report pursuant to Section 13 and 15(d)

Estimated Useful Lives of Property, Plant and Equipment (Detail)

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Estimated Useful Lives of Property, Plant and Equipment (Detail)
 12 Months Ended
Dec. 31, 2016
Building  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 30 years
Leasehold Improvements | Minimum  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 3 years
Leasehold Improvements | Maximum  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 5 years
Equipment and Computers | Minimum  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 3 years
Equipment and Computers | Maximum  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 5 years
Furniture and Fixtures  
Property Plant And Equipment Disclosure [Line Items]  
Property, plant, and equipment, useful lives 5 years