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Note 11 - Leases - Balance Sheet Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Operating lease right of use assets $ 80,991
Operating lease liabilities - current 2,795
Operating lease liabilities - noncurrent 78,767
Total liabilities 81,562  
Finance leases, liability, current 53  
Finance leases, liability, noncurrent 2,676  
Total finance lease liabilities 2,729  
Property, Plant and Equipment [Member]    
Finance leases, assets 5,800  
Accumulated Depreciation and Amortization [Member]    
Finance leases, assets, depreciation and amortization (3,699)  
Property, Plant and Equipment, Net [Member]    
Finance leases, assets 2,101  
Current Portion of Long-term Obligations [Member]    
Finance leases, liability, current 53  
Long-term Obligations, Net of Current Portion [Member]    
Finance leases, liability, noncurrent $ 2,676