Note 13 - Other Accrued Liabilities - Schedule of Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Pension and postretirement benefit obligations	$ 177	$ 188
Deferred revenue	141	184
Current technology access liability	493	1,006
Current earn-out contingent consideration liability	148	1,090
Customer funded projects	340	759
TCPA litigation accrual (Note 19)	1,300	0
Accrued corporate expenses	237	110
Other	982	898
Other Accrued Liabilities	$ 3,818	$ 4,235