Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Additional Information (Detail)

v2.4.0.8
Property and Equipment - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 90 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Property Plant And Equipment [Line Items]        
Depreciation $ 17 $ 3 $ 22 $ 61
Computer Equipment [Member]
        
Property Plant And Equipment [Line Items]        
Depreciation       $ 41