Note 1 - Company Overview (Details Textual)		1 Months Ended	12 Months Ended
	May 14, 2025	Jan. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2026 USD ($)	Mar. 13, 2026 USD ($)	Aug. 29, 2025 USD ($)
Net Income (Loss) Attributable to Parent			$ (18,984,000)	$ (11,862,000)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation			(10,895,000)	2,165,000
Cash and Cash Equivalent			4,857,000	17,998,000
Retained Earnings (Accumulated Deficit)			(730,661,000)	$ (711,677,000)
Employee Severance [Member]
Restructuring and Related Cost, Number of Positions Eliminated	20
Restructuring Charges			$ 1,906,000
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]			Operating Expenses
Employee Severance [Member] | Selling and Marketing Expense [Member]
Restructuring Charges			$ 1,100,000
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]			Selling and Marketing Expense
Employee Severance [Member] | General and Administrative Expense [Member]
Restructuring Charges			$ 800,000
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]			General and Administrative Expense
Subsequent Event [Member] | Employee Severance [Member]
Restructuring and Related Cost, Expected Cost		$ 300,000			$ 0.3
Subsequent Event [Member] | Employee Severance [Member] | Employees and Independent Contractors [Member]
Restructuring and Related Cost, Number of Positions Eliminated		16
Line of Credit [Member] | Midcap Credit Facility [Member]
Line of Credit Facility, Temporary Minimum Liquidity							$ 5,000,000
Line of Credit [Member] | Midcap Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility, Temporary Minimum Liquidity						$ 3,500,000