Annual report pursuant to Section 13 and 15(d)

Estimated Useful Lives of Property and Equipment (Detail)

v3.7.0.1
Estimated Useful Lives of Property and Equipment (Detail)
12 Months Ended
Dec. 31, 2016
Motor Vehicles  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 5 years
Leasehold Improvements  
Property, Plant and Equipment [Line Items]  
Leasehold improvements Lesser of lease term or estimated useful life
Minimum | Machinery and Equipment  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 3 years
Minimum | Furniture and Fixtures  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 5 years
Minimum | Computers And Software  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 3 years
Maximum | Machinery and Equipment  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 7 years
Maximum | Furniture and Fixtures  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 7 years
Maximum | Computers And Software  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, Useful Life 7 years