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 |
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| 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 | ||||||||||