Note 6 - Accounts Payable and Accrued Liabilities (In Thousands) - Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts payable	$ 29,151	$ 43,636
Accrued property taxes	4,109	2,987
Accrued payroll	3,606	6,575
Workers' compensation reserve	4,364	3,629
Group health insurance	1,900	2,300
Asset retirement obligation - current portion	1,548	2,150
Other	1,212	1,631
Total accounts payable and accrued liabilities	$ 45,890	$ 62,908