Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details Narrative)

v3.20.4
Stock Based Compensation (Details Narrative) - USD ($)
12 Months Ended
Apr. 30, 2020
Feb. 17, 2020
Jan. 07, 2020
Jan. 02, 2020
Jan. 07, 2019
Jan. 02, 2019
Jun. 15, 2017
Jun. 15, 2016
Jun. 14, 2016
Sep. 27, 2020
Sep. 29, 2019
Shares outstanding                   8,690,136 8,436,422
Number of shares issued during the period, shares                   59,447 55,565
Vested restricted stock units issued net of tax withholding, shares                   84,500 82,500
Unvested Restricted Stock Units [Member]                      
Issuance of restricted common stock, shares             16,500        
Restricted Stock [Member]                      
Unrecognized compensation expense, period for recognition                   4 years 2 months 30 days  
Restricted Stock Units (RSUs) [Member]                      
Unrecognized compensation expense, period for recognition                   1 year 8 months 2 days  
Mr.Danny Schoening [Member]                      
Issuance of restricted common stock, shares               150,000      
Mr.Danny Schoening [Member] | January 1, 2017 [Member]                      
Vesting percentage               34.00%      
Share-based compensation vesting percentage               34.00%      
Mr.Danny Schoening [Member] | January 1, 2018 [Member]                      
Vesting percentage               33.00%      
Share-based compensation vesting percentage               33.00%      
Mr.Danny Schoening [Member] | January 1, 2019 [Member]                      
Vesting percentage               33.00%      
Share-based compensation vesting percentage               33.00%      
Mr.Karen Hawkins [Member]                      
Issuance of restricted common stock, shares               50,000      
Mr.Karen Hawkins [Member] | January 1, 2017 [Member]                      
Vesting percentage               34.00%      
Share-based compensation vesting percentage               34.00%      
Mr.Karen Hawkins [Member] | January 1, 2018 [Member]                      
Vesting percentage               33.00%      
Share-based compensation vesting percentage               33.00%      
Mr.Karen Hawkins [Member] | January 1, 2019 [Member]                      
Vesting percentage               33.00%      
Share-based compensation vesting percentage               33.00%      
Applied Optics Center General Manager [Member] | January 1, 2018 [Member]                      
Vesting percentage             34.00%        
Share-based compensation vesting percentage             34.00%        
Applied Optics Center General Manager [Member] | January 1, 2019 [Member]                      
Vesting percentage             33.00%        
Share-based compensation vesting percentage             33.00%        
Applied Optics Center General Manager [Member] | January 1, 2020 [Member]                      
Vesting percentage             33.00%        
Share-based compensation vesting percentage             33.00%        
Three Directors and Officers [Member]                      
Number of shares issued during the period, shares         55,565            
Vested restricted stock units issued net of tax withholding         $ 37,000            
Vested restricted stock units issued net of tax withholding, shares         82,500            
One Directors and Two Officers [Member]                      
Number of shares issued during the period, shares     59,447                
Vested restricted stock units issued net of tax withholding     $ 54,000                
Vested restricted stock units issued net of tax withholding, shares     84,500                
Three Independent Directors [Member]                      
Vesting percentage       20.00%              
Number of non-vested shares granted       100,000              
Vesting period of shares 5 years     5 years              
Restricted shares description       An effective date of January 1, 2020, in addition to granting 100,000 restricted shares to each independent director which shall vest at a rate of 20% per year (20,000 shares) each January 1st, over the next five years, through January 1, 2025.              
Share-based compensation vesting percentage       20.00%              
Stock issued during period shares share based compensation 300,000                    
Stock issued during period value share based compensation $ 525,000                    
Shares issued price per share $ 1.75                    
Three Independent Directors [Member] | Minimum [Member]                      
Share based compensation $ 22,000                    
Three Independent Directors [Member] | Maximum [Member]                      
Share based compensation $ 36,000                    
2009 Stock Option Plan [Member]                      
Number of share authorized                   75,000  
Fully vested stock options outstanding                     25,000
Exercise price                     $ 10
Expiration date                     Dec. 18, 2020
Stock options repurchased price per share                   $ 0.01  
Total transaction amount                   $ 250,000  
Number of remaining options, shares granted                    
Shares outstanding                    
2016 Restricted Stock Unit Plan [Member]                      
Amortization of grant date fair market value             $ 47,500        
2016 Restricted Stock Unit Plan [Member] | Officers and Employees [Member]                      
Issuance of restricted common stock, shares                 1,000,000    
2016 Restricted Stock Unit Plan [Member]                      
Stock price at grant date   $ 2.13       $ 1.32   $ 1.85      
Amortization of grant date fair market value   $ 107,000       $ 264,000   $ 372,000      
Number of non-vested shares granted                   50,000 200,000
Vesting period of shares   3 years       3 years          
2016 Restricted Stock Unit Plan [Member] | Mr.Danny Schoening [Member]                      
Number of non-vested shares granted           150,000          
Vesting period of shares           3 years          
Vesting percentage, next twelve months           34.00%          
Vesting percentage, thereafter           33.00%          
2016 Restricted Stock Unit Plan [Member] | Mr.Karen Hawkins [Member]                      
Number of non-vested shares granted           50,000          
Vesting period of shares           3 years          
Vesting percentage, next twelve months           34.00%          
Vesting percentage, thereafter           33.00%          
2016 Restricted Stock Unit Plan [Member] | Applied Optics Center General Manager [Member]                      
Issuance of restricted common stock, shares             50,000        
Stock price at grant date             $ 0.95        
2016 Restricted Stock Unit Plan [Member] | Bill Gates [Member]                      
Number of non-vested shares granted   50,000                  
Vesting period of shares   3 years                  
Vesting percentage, next twelve months   34.00%                  
Vesting percentage, thereafter   33.00%