Note 4 - Debt - Summary of Outstanding Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Total debt	$ 138,196	$ 127,226
Current portion of long-term debt	59,684	75,639
Long term debt, net	78,512	51,587
Revolving Credit Facility
Total debt	50,000	25,000
Equipment loans
Total debt	6,651	8,396
Senior Notes, net
Total debt	32,945	32,830
Financing of Ramaco Coal acquisition - Related party debt
Total debt	30,000	40,000
Financing of Maben Coal acquisition
Total debt	$ 18,600	$ 21,000