Note 6 - Accounts Payable and Accrued Liabilities (In Thousands) - Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts payable	$ 28,947	$ 43,636
Accrued property taxes	3,458	2,987
Accrued payroll	4,620	6,575
Workers' compensation reserve	4,306	3,629
Group health insurance	2,200	2,300
Asset retirement obligation - current portion	1,514	2,150
Other	2,080	1,631
Total accounts payable and accrued liabilities	$ 47,125	$ 62,908