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Intangible and Other Assets Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Schedule of Intangible Assets Disclosure [Line Items]    
Other $ 205 $ 205
Total intangibles and other assets, net 233 313
Internet Domain Names    
Schedule of Intangible Assets Disclosure [Line Items]    
Internet domain names 748 14,607
Less accumulated amortization (720) (14,499)
Internet domain names, net $ 28 $ 108