Note 5 - Long-term Debt - Bank Debt, Less Debt Issuance Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current bank debt	$ 36,750	$ 34,912
Less unamortized debt issuance costs	(2,439)	(1,868)
Net current portion	34,311	33,044
Long-term bank debt	110,175	145,238
Less unamortized debt issuance costs	(4,290)	(4,644)
Net long-term portion	105,885	140,594
Total bank debt	146,925	180,150
Less total unamortized debt issuance costs	(6,729)	(6,512)
Net bank debt	$ 140,196	$ 173,638