Note 5 - Property and Equipment (Details Textual) - USD ($) |
6 Months Ended | ||
---|---|---|---|
Jun. 30, 2023 |
Jun. 30, 2022 |
Feb. 03, 2023 |
|
Depreciation, Total | $ 425,000 | $ 129,000 | |
Viewpoint Molecular Targeting, Inc. [Member] | |||
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 5,050,000 | $ 5,050,000 | |
Other [Member] | |||
Depreciation, Total | $ 0 |