Note 9 - Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Total long term debt, net	$ 3,097	$ 1,824
Mortgage Promissory Note, December 2023 [Member]
Total long term debt, net	2,968	0
Mortgage Promissory Note, July 2020 [Member]
Total long term debt, net	0	1,761
Equipment Notes, May 2021 [Member] | Notes Payable, Other Payables [Member]
Total long term debt, net	15	24
Equipment Notes June 2023 [Member] | Notes Payable, Other Payables [Member]
Total long term debt, net	114	0
Progress Payment Agreement [Member]
Total long term debt, net	$ 0	$ 39