Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) - Schedule of Warrants Valued Using Option Pricing Method (Details)

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Stockholders' Equity (Deficit) - Schedule of Warrants Valued Using Option Pricing Method (Details)
 9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Valuation Technique [Extensible List] us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:ValuationTechniqueOptionPricingModelMember
Average Expected Life (in Years)      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, term   2 years 6 months 2 years 6 months
Expected Volatility      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input   0.853 0.847
Risk-free Interest Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input   0.0155 0.0083
Expected Dividend      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input 0.00 0.00 0.00
Minimum | Average Expected Life (in Years)      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, term 3 years 1 month 6 days    
Minimum | Expected Volatility      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input 0.6242    
Minimum | Risk-free Interest Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input 0.0288    
Maximum | Average Expected Life (in Years)      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, term 8 years 9 months 18 days    
Maximum | Expected Volatility      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input 0.7121    
Maximum | Risk-free Interest Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Warrants, measurement input 0.0340