Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.23.2
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 10, 2023
Dec. 20, 2022
Oct. 17, 2022
Feb. 25, 2021
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Reverse stock split, description   1 for 100 reverse stock split                  
Net loss         $ 2,455 $ 293 $ 2,512 $ 2,845 $ 2,748 $ 5,357  
Cash in operating activities                 8,071 $ 5,722  
Accumulated deficit         $ 265,203       $ 265,203   $ 262,455
Sale of stock, description of transaction the Company closed on a public offering of 2,150,000 units, with each unit consisting of one share of common stock, or one pre-funded warrant to purchase one share of its common stock, one Class C Warrant to purchase one share of common stock, and one half of one Class D Warrant with each whole Class D Warrant entitling the holder to purchase one share of common stock. Each unit was sold at a public offering price of $5.60. The Class C and Class D Warrants are immediately exercisable at a price of $5.60 per share. The Class C and Class D warrants each have a cashless exercise provision entitling the holders to surrender one Class C Warrant and receive 0.4 shares of common stock and on the surrender of one Class D Warrant the holder is entitled to receive 0.8 shares of common stock.                    
Equity distribution impact, description                 Because the company’s public float is less than $75 million, we may not sell securities over a 12-month period in an amount greater than one-third of our public float.    
Stock issued in public offering, units 2,150,000   4,656                
Proceeds from public offering     $ 4,700                
Common Stock and Series B and Series C Preferred Stock and Warrants [Member]                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Stock issued in public offering, units     4,656                
Proceeds from public offering     $ 4,700                
IPO [Member]                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Stock issued in public offering, units 2,150,000                    
Gross proceeds from sale of stock $ 12,000                    
Maxim Group LLC [Member]                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Sale of stock, description of transaction       (i) the sale of shares having an aggregate offering price of $15.0 million, (ii) the termination by either Maxim or the Company upon the provision of fifteen (15) days written notice, or (iii) February 25, 2024. Under the terms of the 2021 Distribution Agreement, Maxim will be entitled to a transaction fee at a fixed rate of 2.0% of the gross sales price of Shares sold under the 2021 Distribution Agreement.              
Gross proceeds from sale of stock       $ 15,000              
2021 ATM Equity Distribution Agreement [Member] | Maxim Group LLC [Member]                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Sale of stock, description of transaction                 The Offering will terminate upon the earlier of (i) the sale of shares having an aggregate offering price of $15.0 million, (ii) the termination by either Maxim or the Company upon the provision of fifteen (15) days written notice, or (iii) February 25, 2024. Under the terms of the 2021 Distribution Agreement, Maxim will be entitled to a transaction fee at a fixed rate of 2.0% of the gross sales price of Shares sold under the 2021 Distribution Agreement. The Company will also reimburse Maxim for certain expenses incurred in connection with the 2021 Distribution Agreement and agreed to provide indemnification and contribution to Maxim with respect to certain liabilities under the Securities Act and the Securities Exchange Act of 1934, as amended. As of June 30, 2023, there have been no sales of shares of common stock under the 2021 Distribution Agreement    
2021 ATM Equity Distribution Agreement [Member] | Maxim Group LLC [Member] | Maximum [Member]                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Stock offering expense       $ 2,000