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Bank Debt - Narrative (Details) - Revolving Credit Facility - Line of Credit - USD ($)
3 Months Ended
May 01, 2019
Oct. 11, 2018
Mar. 31, 2019
Mar. 31, 2018
Apr. 30, 2019
Mar. 01, 2012
Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate     1.00% 2.00%    
Amended And Restated Financing Agreement            
Debt Instrument [Line Items]            
Eligible invoiced receivables advance rate   85.00%        
Eligible uninvoiced receivables sub limit   $ 2,500,000        
Eligible uninvoiced receivables advance rate   75.00%        
Commitment fee   $ 11,765        
Commitment fee percentage   0.25%        
Monthly maintenance fee   0.125%        
Fee in lieu of warrant   $ 30,000        
Fee due upon termination   $ 80,000        
Amended And Restated Financing Agreement | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   1.00%        
Amended And Restated Financing Agreement Uninvoiced Eligible Invoices | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   2.00%        
Bridge Bank, N.A. | Bridge Bank – Revolving Credit Line - March 1, 2012            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity           $ 10,000,000
Subsequent Event | Amended And Restated Financing Agreement            
Debt Instrument [Line Items]            
Eligible uninvoiced receivables sub limit         $ 2,500,000  
Subsequent Event | Second Amendment            
Debt Instrument [Line Items]            
Eligible uninvoiced receivables sub limit $ 2,500,000          
Days after merger 3 days