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Related Party Transactions Related Party Transactions (Detail Narrative) - USD ($)
12 Months Ended
Oct. 09, 2018
Feb. 23, 2018
Dec. 31, 2018
Dec. 31, 2017
Nov. 17, 2017
Sep. 16, 2013
Related Party Transaction [Line Items]            
Series A redeemable convertible preferred stock, shares issued     900,000 900,000    
Affiliated Entity            
Related Party Transaction [Line Items]            
Revenue from related parties     $ 40,519      
HCP-FVA, LLC | Finance Commitment Loan            
Related Party Transaction [Line Items]            
Total loan commitment amount available         $ 3,000,000  
Proceeds from issuance of long-term debt         3,000,000  
HCP-FVA, LLC | Commitment Loan [Member]            
Related Party Transaction [Line Items]            
Proceeds from issuance of long-term debt   $ 3,000,000        
Warrants issued (in shares)   30,000,000        
HCP-FVA, LLC | Loan and Security Agreement Short-term Loan            
Related Party Transaction [Line Items]            
Proceeds from issuance of long-term debt         $ 500,000  
Debt converted   $ 500,000        
New Investors [Member] | Financing Of Units [Member]            
Related Party Transaction [Line Items]            
Proceeds from issuance of long-term debt $ 1,000,000          
Debt Instrument, Portion Of Debt Sold To New Lender $ 520,000          
Initial Backstop Warrant | HCP-FVA, LLC | Finance Commitment Loan            
Related Party Transaction [Line Items]            
Proceeds from warrants   3,000,000        
Initial Backstop Warrant | HCP-FVA, LLC | Loan and Security Agreement Short-term Loan            
Related Party Transaction [Line Items]            
Proceeds from warrants   $ 2,500,000        
Warrants issued (in shares)         13,859,128  
Additional Backstop Warrant | HCP-FVA, LLC | Loan and Security Agreement Short-term Loan            
Related Party Transaction [Line Items]            
Warrants issued (in shares)   41,577,383        
Financing Warrants | HCP-FVA, LLC | Commitment Loan [Member]            
Related Party Transaction [Line Items]            
Class Of Warrant Of Right, Warrants Cancelled 63,610,935          
Financing Warrants | HCP-FVA, LLC | Loan and Security Agreement Short-term Loan            
Related Party Transaction [Line Items]            
Warrants issued (in shares)   366,990,000        
Financing Warrants | HCP-FVA, LLC | Financing Of Units [Member]            
Related Party Transaction [Line Items]            
Class of Warrant or Right, Outstanding 303,379,065          
Financing Warrants | New Investors [Member] | Financing Of Units [Member]            
Related Party Transaction [Line Items]            
Class of Warrant or Right, Outstanding 185,942,009          
Redeemable Convertible Preferred Stock [Member]            
Related Party Transaction [Line Items]            
Series A redeemable convertible preferred stock, shares issued           900,000
Redeemable Convertible Preferred Stock [Member] | New Investors [Member]            
Related Party Transaction [Line Items]            
Series A redeemable convertible preferred stock, shares issued 342,000