Note 6 - Stockholders' Equity and Equity Linked Instruments - Schedule of Dividends (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|||||
| Dividend Shares (in shares) | 7,945 | 15,675 | |||||||||
| Fair Value Shares Issued | $ 729,000 | $ 101,000 | [1] | $ 868,000 | [1] | ||||||
| Series A-5 Preferred Stock [Member] | |||||||||||
| Dividend Shares (in shares) | 54 | 55 | |||||||||
| Fair Value Shares Issued | [1] | $ 1,000 | $ 4,000 | ||||||||
| Series A A Preferred Stock [Member] | |||||||||||
| Dividend Shares (in shares) | 6,359 | 11,907 | |||||||||
| Fair Value Shares Issued | [1] | $ 89,000 | $ 662,000 | ||||||||
| Series AA-3 Convertible Preferred Stock [Member] | |||||||||||
| Dividend Shares (in shares) | 66 | 1,029 | |||||||||
| Fair Value Shares Issued | [1] | $ 1,000 | $ 60,000 | ||||||||
| Series AA-4 Convertible Preferred Stock [Member] | |||||||||||
| Dividend Shares (in shares) | 1,348 | 1,387 | |||||||||
| Fair Value Shares Issued | [1] | $ 9,000 | $ 77,000 | ||||||||
| Series AA-5 Convertible Preferred Stock [Member] | |||||||||||
| Dividend Shares (in shares) | 118 | 1,297 | |||||||||
| Fair Value Shares Issued | [1] | $ 1,000 | $ 65,000 | ||||||||
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