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Note 12 - Right-of-use Assets, Net and Lease Liabilities (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of maturity analysis of operating lease payments [line items]    
Cancellations of lease liabilities [1] $ 5,207 $ 103,329
Repayments of lease liabilities 52,400 48,500
Interest expense on lease liabilities 3,500 2,500
NKKTUBES [member] | Lease agreements    
Disclosure of maturity analysis of operating lease payments [line items]    
Net disposals $ 96,600  
Cancellations of lease liabilities   $ 95,800
Not later than one year [member]    
Disclosure of maturity analysis of operating lease payments [line items]    
Remaining lease payments to be made, percentage 25.50% 29.50%
Later than one year and not later than five years [member]    
Disclosure of maturity analysis of operating lease payments [line items]    
Remaining lease payments to be made, percentage 47.50% 33.60%
Later than five years [member]    
Disclosure of maturity analysis of operating lease payments [line items]    
Remaining lease payments to be made, percentage 27.00% 36.90%
[1] For 2021, includes $95.8 million related to NKKTubes lease agreement re-measurement due to joint venture termination.