Note 1 - Company Overview (Details Textual) - USD ($) $ / shares in Units, $ in Millions	Apr. 27, 2026	Mar. 31, 2026	Mar. 13, 2026	Dec. 31, 2025	Aug. 29, 2025	Dec. 22, 2021
Common Stock, Par or Stated Value Per Share (in dollars per share)		$ 0.0001		$ 0.0001		$ 0.0001
Common Stock, Shares Authorized (in shares)		500,000,000		500,000,000
Midcap Credit Facility [Member] | Line of Credit [Member]
Line of Credit Facility, Temporary Minimum Liquidity			$ 3.5		$ 5.0
Minimum [Member] | Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2
Maximum [Member] | Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	99
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001
Sale of Stock, Percentage of Ownership after Transaction	4.87%
Common Stock, Shares Authorized (in shares)	1,000,000,000
Number of Additional Designees to Board	4
Subsequent Event [Member] | Securities Purchase Agreement [Member]
Sale of Stock, Percentage of Ownership after Transaction	95.13%
Subsequent Event [Member] | Series AA Convertible Non Redeemable Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)	7.7
Subsequent Event [Member] | Series AA Convertible Non Redeemable Preferred Stock [Member] | Securities Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,750,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001
Subsequent Event [Member] | Series AAA Convertible Non Redeemable Preferred Stock [Member] | Securities Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,750,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001
Subsequent Event [Member] | Convertible Preferred Stock [Member] | Securities Purchase Agreement [Member]
Shares Issued, Price Per Share (in dollars per share)	$ 2
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 7.0
Subsequent Event [Member] | Minimum [Member] | Series AAA Convertible Non Redeemable Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)	117.63
Subsequent Event [Member] | Maximum [Member] | Series AAA Convertible Non Redeemable Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)	135.1
Subsequent Event [Member] | Asset Purchase Agreement [Member] | Discontinued Operations, Held-for-Sale [Member]
Disposal Group, Including Discontinued Operation, Consideration	$ 18.0
Asset Purchase Agreement, Termination Fee	1.1
Asset Purchase Agreement, Transaction Expenses	$ 0.6
Subsequent Event [Member] | Asset Purchase Agreement [Member] | Discontinued Operations, Held-for-Sale [Member] | Minimum [Member]
Asset Purchase Agreement, Contribution Margin Covenant Percentage	87.50%
Subsequent Event [Member] | Asset Purchase Agreement [Member] | Discontinued Operations, Held-for-Sale [Member] | Maximum [Member]
Asset Purchase Agreement, Transaction Expenses	$ 0.6