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Stock Options, Incentive Plans, Stock Awards, and Employee Benefit Plan (Details) - USD ($)
12 Months Ended
May 01, 2020
May 01, 2019
May 01, 2018
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Treasury stock repurchased         $ 112,910 $ 431,755
Stock-based compensation expense         968,141 $ 968,141
Unrecognized compensation costs         $ 7,012,544  
Weighted average remaining contractual life         8 years 6 months 4 days  
Share price (in dollars per share)         $ 2.53  
Stock warrants outstanding (in shares)         0  
Wedbush            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Treasury stock repurchased (in shares)         19,379  
Treasury stock repurchased         $ 23,760  
Directors And Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Treasury stock repurchased (in shares)         56,973  
Treasury stock repurchased         $ 89,250  
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         1,695,334  
Award vesting period         10 years  
Restricted stock units vested in period (in shares)         36,674  
Restricted Stock | Directors And Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         1,395,334  
Restricted Stock | Executive Officer | Louis A. Hoch            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         300,000  
Restricted Stock | Executive Officer | Tom Jewell            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         150,000  
Equity Incentive Plan 2025            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized (in shares)         5,000,000  
Percentage increase in capital shares reserved for future issuance per year         5.00%  
Equity Incentive Plan 2025 | Director 1            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         66,667  
Equity Incentive Plan 2025 | Director 1 | Forecast            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units vested in period (in shares) 22,222   22,223      
Equity Incentive Plan 2025 | Director 1 | Subsequent Event            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units vested in period (in shares)   22,222        
Equity Incentive Plan 2025 | Restricted Stock | Directors And Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         1,695,334  
Equity Incentive Plan 2025 | Restricted Stock | Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         66,667  
Equity Incentive Plan 2025 | Restricted Stock | Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         105,000  
Employment Agreement | Restricted Stock | Vaden Landers            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock units granted (in shares)         300,000  
Award vesting period         10 years  
Employee Stock Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Purchase price of common stock, percent       85.00%    
Stock issued related to employee stock purchase plan (in shares)         0