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Note 9 - Lease - Lease Obligations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Amortization of right-of-use assets | $ 2,314 | $ 3,620
Interest on lease liabilities | 377 | 637
Operating lease cost | 20,538 | 19,583
Short-term lease cost | 13,625 | 4,419
Variable lease cost | 232 | 89
Total lease cost | 37,086 | 28,348
Operating cash flows from finance leases | 377 | 637
Operating cash flows from operating leases | 17,114 | 17,188
Financing cash flows from finance leases | 5,516 | 5,626
Right-of-use assets obtained in exchange for new finance lease liabilities | 458 | 0
Right-of-use assets obtained in exchange for new operating lease liabilities | $ 48,515 | $ 15,795
Weighted-average remaining lease term—finance leases (Year) | 5 years 8 months 12 days | 1 year
Weighted-average remaining lease term—operating leases (Year) | 4 years 7 months 6 days | 4 years 10 months 24 days
Weighted-average discount rate—finance leases | 5.10% | 4.70%
Weighted-average discount rate—operating leases | 9.10% | 6.40%

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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