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Bank Debt - Narrative (Details) - USD ($)
6 Months Ended
May 01, 2019
Oct. 11, 2018
Jun. 30, 2019
Jun. 30, 2018
Jun. 06, 2019
Apr. 30, 2019
Mar. 01, 2012
Third Amendment to the Amended and Restated Financing Agreement              
Debt Instrument [Line Items]              
Amendment fee         $ 2,000    
Revolving Credit Facility | Line of Credit | Prime Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate     1.00% 2.00%      
Revolving Credit Facility | Line of Credit | Amended And Restated Financing Agreement              
Debt Instrument [Line Items]              
Eligible invoiced receivables advance rate   85.00%          
Eligible uninvoiced receivables sub limit   $ 2,500,000       $ 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          
Revolving Credit Facility | Line of Credit | Amended And Restated Financing Agreement | Prime Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate   1.00%          
Revolving Credit Facility | Line of Credit | Amended And Restated Financing Agreement Uninvoiced Eligible Invoices | Prime Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate   2.00%          
Revolving Credit Facility | Line of Credit | Second Amendment              
Debt Instrument [Line Items]              
Eligible uninvoiced receivables sub limit $ 2,500,000            
Days after merger 3 days            
Amendment fee $ 1,000            
Revolving Credit Facility | Line of Credit | Third Amendment to the Amended and Restated Financing Agreement              
Debt Instrument [Line Items]              
Eligible uninvoiced receivables sub limit         2,500,000    
Amendment fee         $ 2,000    
Revolving Credit Facility | Bridge Bank, N.A. | Line of Credit | Bridge Bank – Revolving Credit Line - March 1, 2012              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity             $ 10,000,000