Note 7 - Fair Value Measurements - Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Total assets measured and recorded at fair value | $ 21,034,628 | $ 13,228,720 |
| Fair Value, Inputs, Level 1 [Member] | ||
| Total assets measured and recorded at fair value | 21,034,628 | 13,228,720 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Total assets measured and recorded at fair value | 0 | 0 |
| Fair Value, Inputs, Level 3 [Member] | ||
| Total assets measured and recorded at fair value | 0 | 0 |
| Money Market Funds [Member] | ||
| Money market funds (cash equivalents) | 21,034,628 | 13,228,720 |
| Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] | ||
| Money market funds (cash equivalents) | 21,034,628 | 13,228,720 |
| Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] | ||
| Money market funds (cash equivalents) | 0 | 0 |
| Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] | ||
| Money market funds (cash equivalents) | $ 0 | $ 0 |