Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.22.1
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 12 Months Ended
Feb. 25, 2021
Feb. 06, 2020
Aug. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Product Information [Line Items]            
Net Income (Loss) Attributable to Parent       $ 8,775,000 $ 7,029,000  
Net Cash Provided by (Used in) Operating Activities       10,132,000 9,112,000  
Retained Earnings (Accumulated Deficit)       249,883,000 $ 241,107,000  
Proceeds from Issuance Initial Public Offering   $ 9,400,000        
[custom:UnderwritingDiscountsAndCommissionsAndOfferingExpenses]   $ 1,200,000        
Impairment loss for definite-lived intangible assets       $ 0    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount       1,800,000 1,500,000  
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customer [Member]            
Product Information [Line Items]            
Concentration Risk, Percentage       97.00%    
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]            
Product Information [Line Items]            
Concentration Risk, Percentage       88.00% 95.00%  
Four Registered Direct Offering [Member]            
Product Information [Line Items]            
[custom:StockIssuedDuringPeriodSharesIssuanceCost]     11,015,000      
Proceeds from Debt, Net of Issuance Costs     $ 20,900,000      
Stock offering expense     $ 1,600,000      
2019 ATM Equity Distribution Agreement [Member] | Maxim Group LLC [Member]            
Product Information [Line Items]            
Stock offering expense         $ 34,000.000  
Sale of Stock, Number of Shares Issued in Transaction         354,381  
Sale of Stock, Consideration Received Per Transaction         $ 800,000  
2019 ATM Equity Distribution Agreement [Member] | Maxim Group LLC [Member] | Maximum [Member]            
Product Information [Line Items]            
Stock offering expense           $ 2,500,000
2021 ATM Equity Distribution Agreement [Member] | Maxim Group LLC [Member] | Maximum [Member]            
Product Information [Line Items]            
Stock offering expense $ 15,000,000.0