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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)
May 19, 2021
Jun. 30, 2021
Dec. 31, 2020
Jul. 28, 2020
Commitments And Contingencies [Line Items]        
Total restricted cash   $ 74,000,000    
Number of days within which individual defendants has to respond to plaintiff on amended complaint after its filing 60 days      
DFC [Member]        
Commitments And Contingencies [Line Items]        
Line of credit facility, maximum borrowing capacity       $ 765,000,000
BRAZIL        
Commitments And Contingencies [Line Items]        
Restricted Cash   3,000,000 $ 4,000,000  
Federal and State Value added Taxes Litigations and Civil Litigation and Disputes with Former Employees [Member] | BRAZIL        
Commitments And Contingencies [Line Items]        
Loss Contingency, Estimate of Possible Loss   4,000,000    
Threat of Expropriation of Assets [Member] | BRAZIL        
Commitments And Contingencies [Line Items]        
Restricted Cash   3,000,000    
Assets, Noncurrent   45,000,000    
Amended ABL Credit Agreement [Member]        
Commitments And Contingencies [Line Items]        
Long-term line of credit   42,000,000    
L/C Facility Agreement [Member]        
Commitments And Contingencies [Line Items]        
Long-term line of credit   45,000,000    
Bank Guarantees and Letters of Credit [Member]        
Commitments And Contingencies [Line Items]        
Guarantor Obligations, Maximum Exposure, Undiscounted   2,000,000    
Surety Bond [Member]        
Commitments And Contingencies [Line Items]        
Guarantor Obligations, Maximum Exposure, Undiscounted   $ 29,000,000