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Note 8 - Lease Obligations - Lease Obligations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Amortization of right-of-use assets $ 122 $ 54 $ 368 $ 567
Interest on lease liabilities 215 181 636 305
Operating lease cost 3,648 4,656 10,607 13,901
Variable lease cost 50 87 199 972
Short-term lease cost 802 1,497 2,776 5,630
Total lease cost 4,837 6,475 14,586 21,375
Operating cash flows from finance leases 215 181 636 305
Operating cash flows from operating leases 2,851 3,436 8,286 10,614
Financing cash flows from finance leases 188 1,923 553 5,432
Right-of-use assets obtained in exchange for new finance lease liabilities 0 2,799 815 5,938
Right-of-use assets obtained in exchange for new operating lease liabilities $ 4,783 $ 0 $ 13,753 $ 3,992
Weighted-average remaining lease term—finance leases (in years) (Year) 3 years 6 months   3 years 6 months  
Weighted-average remaining lease term—operating leases (in years) (Year) 4 years 7 months 6 days   4 years 7 months 6 days  
Weighted-average discount rate—finance leases 13.50%   13.50%  
Weighted-average discount rate—operating leases 8.60%   8.60%