Note 4 - Bank Debt - Bank Debt, Less Debt Issuance Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current bank debt	$ 22,750	$ 35,500
Less unamortized debt issuance cost	(1,562)	(2,469)
Net current portion	21,188	33,031
Long-term bank debt	39,000	49,713
Less unamortized debt issuance cost	(2,518)	0
Net long-term portion	36,482	49,713
Total bank debt	61,750	85,213
Less total unamortized debt issuance cost	(4,080)	(2,469)
Net bank debt	$ 57,670	$ 82,744