Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.21.2
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 25, 2021
Feb. 06, 2020
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]                    
Net Income (Loss) Attributable to Parent     $ 2,199 $ 2,633 $ 4,028 $ (1,169) $ 4,832 $ 2,859    
Net Cash Provided by (Used in) Operating Activities             5,339 $ 4,938    
Retained Earnings (Accumulated Deficit)     $ 245,939       $ 245,939   $ 241,107  
Proceeds from issuance of public offering   $ 9,400                
Underwriting discounts and commissions and offering expenses payable   $ 1,200                
Four Registered Direct Offering [Member]                    
Property, Plant and Equipment [Line Items]                    
Number of shares issuance cost             11,015,000      
Proceeds from issuance cost             $ 20,900      
Stock offering expense             $ 1,600      
ATM Equity Distribution Agreement [Member]                    
Property, Plant and Equipment [Line Items]                    
Stock offering expense                 $ 34  
Number of stock sold during period                 354,381  
Sale of stock value                 $ 800  
ATM Equity Distribution Agreement [Member] | Maximum [Member]                    
Property, Plant and Equipment [Line Items]                    
Proceeds from issuance of public offering                   $ 2,500
Equity Distribution Agreement [Member] | Maxim Group L L C [Member]                    
Property, Plant and Equipment [Line Items]                    
Aggregate offering price $ 15,000