Note 4 - Bank Debt - Bank Debt, Less Debt Issuance Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current bank debt	$ 35,000	$ 35,500
Less unamortized debt issuance cost	(2,728)	(2,469)
Net current portion	32,272	33,031
Long-term bank debt	40,200	49,713
Less unamortized debt issuance cost	(129)	0
Net long-term portion	40,071	49,713
Total bank debt	75,200	85,213
Less total unamortized debt issuance cost	(2,857)	(2,469)
Net bank debt	$ 72,343	$ 82,744