Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, net - Components of Property and Equipment (Detail)

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Property and Equipment, net - Components of Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 94 $ 467
Less: Accumulated depreciation (31) (20)
Property and equipment, net 63 447
Construction in Progress [Member]
   
Property, Plant and Equipment [Line Items]    
Total property and equipment 0 373
Useful Life (Years) 0 years  
Computer Equipment [Member]
   
Property, Plant and Equipment [Line Items]    
Total property and equipment 13 13
Useful Life (Years) 3 years  
Furniture and Fixtures [Member]
   
Property, Plant and Equipment [Line Items]    
Total property and equipment 69 69
Useful Life (Years) 5 years  
Leasehold Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 12 $ 12
Useful Life (Years) 5 years