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Current Liabilities and Debt Obligations, Accounts Receivable Purchase Agreement & Financing and Security Agreement (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 15, 2016
Dec. 31, 2018
Sep. 06, 2016
Republic Capital Access LLC [Member] | Accounts Receivable Purchase Agreement [Member]      
Accounts Receivable Purchase Agreement [Abstract]      
Limit of outstanding purchased receivables $ 10,000    
Automatic renewal term   12 months  
Percentage of initial purchase price of purchased receivable 85.00%    
Residual percentage of purchased receivable 15.00%    
Percentage of discount factor for federal government prime contracts 0.30%    
Percentage of discount factor for non-federal government investment grade account obligors 0.56%    
Percentage of discount factor for non-federal government non-investment grade account obligors 0.62%    
Percentage of program access fee 0.008%    
Percentage of commitment fee 1.00%    
Republic Capital Access LLC [Member] | Accounts Receivable Purchase Agreement [Member] | US Government Agency [Member]      
Accounts Receivable Purchase Agreement [Abstract]      
Percentage of initial purchase price of purchased receivable 90.00%    
Residual percentage of purchased receivable 10.00%    
Action Capital Corporation [Member] | Financing and Security Agreement [Member]      
Financing and Security Agreement [Abstract]      
Percentage of advances 90.00%    
Maximum outstanding principal amount of advances     $ 5,000
Financing agreement term   2 years  
Percentage of monthly fee 0.50%    
Outstanding borrowing of credit facility   $ 0  
Action Capital Corporation [Member] | Financing and Security Agreement [Member] | Prime Rate [Member]      
Financing and Security Agreement [Abstract]      
Percentage added to reference rate to compute the variable rate 2.00%