Note 8 - Noncontrolling Interest - Clyra Medical - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts payable	$ 1,663	$ 1,212
Accrued payroll	77	251
Accrued interest		25
Accounts payable and accrued expenses, total	1,740	1,488
Clyra Medical [Member]
Accounts payable	417	135
Accrued dividend	328	242
Accrued payroll	12	7
Accrued interest	15	13
Accounts payable and accrued expenses, total	$ 772	$ 397