Note 13 - Subsequent Event (Details Textual) - Subsequent Event [Member] - USD ($) $ / shares in Units, $ in Thousands	Feb. 26, 2024	Jan. 07, 2024
Precision License Agreement [Member]
License Agreement, Amount Paid Upfront		$ 7,500
License Agreement, Amount Paid Upfront, Cash		5,250
License Agreement, Amount Paid Upfront, Equity Investment		$ 2,250
Investment Purchased Balance Price Per Share (in dollars per share)		$ 0.77
License Agreement, Deferred Payment		$ 2,500
License Agreement, Additional Milestone Payments		$ 288,000
Precision License Agreement [Member] | Precision [Member]
Investment Purchased Balance Shares (in shares)		2,920,816
Commercialization Agreement With Neuraxpharm [Member]
Milestone Payments	$ 12,500