Note 7 - Accounts Payable and Accrued Expenses - Accounts Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts payable	$ 1,293	$ 1,222
Accrued compensation	609	631
Accrued income taxes	129	137
Customer deposits	1,031	119
Other accrued expenses	301	224
Accounts Payable and Accrued Liabilities, Current	$ 3,363	$ 2,333