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Notes Payable (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Apr. 06, 2017
Jun. 01, 2016
Oct. 27, 2015
Aug. 12, 2015
Apr. 16, 2015
Feb. 02, 2015
Sep. 24, 2014
Feb. 22, 2013
May 30, 2012
Sep. 12, 2011
Mar. 31, 2010
Jul. 31, 2017
Jul. 31, 2016
Short-term Debt [Line Items]                          
Proceeds from unrelated third party                       $ 100 $ 325
Frost Gamma Investment Trust [Member] | 2011 Promissory Notes [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage                   10.00%      
Aggregate principal amount                   $ 50      
Debt instrument maturity date                   Jul. 31, 2018      
Debt instrument interest rate                   11.00%      
Proceeds from unrelated third party                   $ 100      
Frost Gamma Investment Trust [Member] | 2015 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage     10.00% 10.00% 10.00%                
Aggregate principal amount     $ 50 $ 25 $ 100                
Debt instrument maturity date     Jul. 31, 2018 Jul. 31, 2018 Jul. 31, 2018                
Debt instrument interest rate     11.00% 11.00% 11.00%                
Frost Gamma Investment Trust [Member] | 2016 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage   10.00%                      
Aggregate principal amount   $ 100                      
Debt instrument maturity date   Jul. 31, 2018                      
Debt instrument interest rate   11.00%                      
Hsu Gamma Investments L P [Member] | 2012 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount                 $ 50        
Debt instrument maturity date                 Jul. 31, 2018        
Debt instrument interest rate                 11.00%        
Jane Hsiao [Member] | 2013 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount               $ 50          
Debt instrument maturity date               Jul. 31, 2018          
Debt instrument interest rate               11.00%          
Jane Hsiao [Member] | 2014 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount             $ 50            
Debt instrument maturity date             Jul. 31, 2018            
Debt instrument interest rate             11.00%            
Jane Hsiao [Member] | 2015 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount     $ 50     $ 50              
Debt instrument maturity date     Jul. 31, 2018     Jul. 31, 2018              
Debt instrument interest rate     11.00%     11.00%              
Hsu Gamma [Member] | 2016 Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount   $ 100                      
Debt instrument maturity date   Jul. 31, 2018                      
Debt instrument interest rate   11.00%                      
Hsu Gamma [Member] | 2017 Promissory Notes [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount $ 50                        
Debt instrument maturity date Jul. 31, 2018                        
Debt instrument interest rate 11.00%                        
Hsu Gamma [Member] | 2017 Promissory Notes [Member] | September 22, 2017 [Member]                          
Short-term Debt [Line Items]                          
Aggregate principal amount                       $ 50  
Debt instrument maturity date                       Jul. 31, 2018  
Debt instrument interest rate                       11.00%  
Frost Gamma [Member] | 2017 Promissory Notes [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage 10.00%                        
Aggregate principal amount $ 50                        
Debt instrument maturity date Jul. 31, 2018                        
Debt instrument interest rate 11.00%                        
Frost Gamma [Member] | 2017 Promissory Notes [Member] | September 22, 2017 [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage                       10.00%  
Aggregate principal amount                       $ 50  
Debt instrument maturity date                       Jul. 31, 2018  
Debt instrument interest rate                       11.00%  
2010 Credit Facility [Member] | Frost Gamma and Hsu Gamma [Member]                          
Short-term Debt [Line Items]                          
Beneficial ownership percentage                     10.00%    
Aggregate principal amount                     $ 1,000    
Debt instrument maturity date                     Jul. 31, 2018    
Debt instrument interest rate                     11.00%    
2010 Credit Facility [Member] | Frost Gamma and Hsu Gamma [Member] | Maximum [Member]                          
Short-term Debt [Line Items]                          
Debt instrument interest rate                     16.00%    
Credit Facility [Member]                          
Short-term Debt [Line Items]                          
Line of credit facility outstanding                       $ 1,000 $ 1,000