Note 8 - Noncontrolling Interest - Clyra Medical - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts payable	$ 670	$ 717
Accrued payroll	194	198
Accrued interest	25	25
Accounts payable and accrued expenses, total	889	940
Clyra Medical [Member]
Accounts payable	158	186
Accrued payroll	12	45
Accrued interest	8	7
Accrued dividend	152
Accounts payable and accrued expenses, total	$ 330	$ 238