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Major Classes of Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Current assets:    
Other assets $ 19  
Total assets 19  
Current liabilities:    
Accounts payable and accrued expenses 482  
Total current liabilities 482 $ 841
Long-term lease obligations 22  
Total liabilities $ 504