Note 9 - Debt and Credit Agreements - Outstanding Debt Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Long-term Debt, Total	$ 6,827
Less: Current portion	(6,650)	$ (1,406)
Long-term debt, net of current maturities	177	9,381
Line of Credit [Member]
Long-term Debt, Total	6,350	1,245
Paycheck Protection Program CARES Act [Member]
Long-term Debt, Total	0	9,151
Notes Payable, Other Payables [Member]
Long-term Debt, Total	274	163
Less: Current portion	(186)	(161)
Long-term Debt [Member]
Long-term Debt, Total	$ 203	$ 228