Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.22.1
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Nov. 24, 2021
Feb. 25, 2021
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Net income loss     $ 2,845 $ 2,633  
Net cash provided by used in operating activities     3,180 $ 2,992  
Retained earnings (accumulated deficit)     $ 253,262   $ 250,417
Share price     $ 1.00    
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 $2.0 million, (ii) the termination by either Maxim or the Company upon the provision of fifteen (15) days written notice, or (iii) February 25, 2023. 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 March 31, 2022 there have been no sales of shares of common stock under the 2021 Distribution Agreement    
Other income $ 500       500
Reduction of stockholders equity         $ 500
Maxim Group LLC [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Sale of stock, description of transaction   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      
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