Note 8 - Debt - Due Under Factoring Agreement (Details) - Line of Credit [Member] - Factoring Agreement [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Average borrowings outstanding (in thousands)	$ 3,131	$ 1,564	$ 2,977	$ 1,223
Amortization of debt issuance costs (in thousands)	$ 0	$ 23	$ 0	$ 45
Interest paid, as a percentage of average outstanding borrowings	1.50%	1.60%	1.40%	3.40%
Fees paid, as a percentage of average outstanding borrowings	0.90%	1.50%	1.20%	2.90%