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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Prepaid Expense And Other Assets Current [Abstract]    
Insurance premiums $ 252 $ 501
Security Deposit 50 50
Other 197 147
Total prepaid expenses and other current assets $ 499 $ 698