Note 14 - Subsequent Events (Details Textual) $ / shares in Units, $ in Millions	Aug. 07, 2025 USD ($)	Jul. 01, 2025 USD ($) shares	Jul. 18, 2025 $ / shares shares
Subsequent Event [Member] | Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	15
Standby Equity Purchase Agreement [Member]
Percent of Outstanding Common Stock			19.99%
Standby Equity Purchase Agreement [Member] | Subsequent Event [Member]
Sale of Stock, Maximum Amount | $	$ 10	$ 10
Stock Issued During Period, Shares, New Issues		120,482
Sale of Stock, Discount Rate		4.00%
Sale of Stock, Maximum Shares (in shares)			1,921,706
Sale of Stock, Maximum Share Price (in dollars per share) | $ / shares			$ 0.83
Sale of Stock, Beneficial Ownership Voting Power			4.99%