Annual report pursuant to Section 13 and 15(d)

Convertible Notes, Senior Secured Term Loans and Revolving Credit Facility (Narrative) (Details)

v3.19.2
Convertible Notes, Senior Secured Term Loans and Revolving Credit Facility (Narrative) (Details) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
Dec. 02, 2018
Nov. 08, 2018
Nov. 05, 2018
Dec. 02, 2017
Mar. 31, 2019
Feb. 25, 2019
Feb. 25, 2019
Apr. 30, 2019
Apr. 30, 2018
Feb. 28, 2019
Feb. 29, 2012
Debt Instrument [Line Items]                      
Equity raise               $ 23,023,000    
Accrued interest               135,115 79,853    
Senior Secured Loans               $ 7,500,000    
Convertible Notes Payable [Member]                      
Debt Instrument [Line Items]                      
Convertible debt           $ 1,000,000 $ 1,000,000        
Repayment of principal amount on convertible debt $ 1,160,000         1,000,000          
Accrued interest           $ 19,068 19,068        
Settlement expense             60,932        
Senior Secured Loans             $ 10,000,000        
Revolving Credit Facility [Member]                      
Debt Instrument [Line Items]                      
Upfront payment of facility fee         $ 10,000,000            
Commitment fee percentage, payable quarterly         1.00%            
HEMG [Member]                      
Debt Instrument [Line Items]                      
Notes payable                   $ 200,000  
2 Year Promissory Notes [Member]                      
Debt Instrument [Line Items]                      
Interest rate                     0.19%
Debt conversion, price per share                     $ 12.00
Convertible note payable Dated February 29, 2012 [Member]                      
Debt Instrument [Line Items]                      
Face value of loan                     $ 50,000
Convertible Debt [Member] [Default Label] | USU [Member]                      
Debt Instrument [Line Items]                      
Interest rate       8.00%              
Debt conversion, price per share       $ 2.00              
Face value of loan       $ 2,000,000              
Debt maturity period       2 years              
Conversion of note into common share       $ 1,000,000              
Proceeds from convertible note issued       $ 2,000,000              
Credit Facility Agreement [Member] | Revolving Credit Facility [Member]                      
Debt Instrument [Line Items]                      
Line of credit, maximum borrowing capacity     $ 5,000,000                
Interest rate     12.00%                
Maturity date     Nov. 04, 2021                
Upfront payment of facility fee     $ 100,000                
Commitment fee percentage, payable quarterly     2.00%                
Common stock issuable from warrants   92,049 92,049                
Warrant exercise price   $ 5.85 $ 5.85                
Warrant term   5 years 5 years                
Fair value of warrants     $ 255,071