Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Financial Liabilities Measured at Fair Value on Recurring Basis by Level within Fair Value Hierarchy (Details)

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Fair Value Measurements - Schedule of Financial Liabilities Measured at Fair Value on Recurring Basis by Level within Fair Value Hierarchy (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability $ 506 $ 528
Fair Value, Measurements, Recurring [Member] | Common Stock Warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability 1,537 3,665
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock Warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock Warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock Warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability $ 1,537 $ 3,665