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Note 16 - Interest Bearing Loans (Details Textual) - New Credit Facility [Member]
$ in Thousands
Oct. 01, 2021
USD ($)
Dec. 31, 2022
USD ($)
Jul. 21, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 200,000   $ 222,500    
Debt Instrument, Covenant, Minimum EBITDA of Guarantors 80.00%        
Debt Instrument, Covenant, Minimum Consolidated Assets of Guarantors 70.00%        
Debt Instrument, Covenant, Minimum EBITDA and Assets of Subsidiaries 5.00%        
Debt Instrument, LIBOR Floor 0.00%        
Line of Credit Facility, Commitment Fee Percentage 30.00%        
Debt Instrument, Covenant, Minimum Cash Flow Cover Ratio 1.5        
Debt Instrument, Covenant, Minimum Interest Cover Ratio 4.0        
Debt Instrument, Covenant, Maximum Senior Leverage Ratio 2.25     2.25  
Debt Instrument, Maximum Percentage of Aggregate Capital Expenditures 110.00%        
Repurchase or Redemption of Shares, Maximum Aggregate Amount       $ 50,000  
Drawdowns as Loans [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 130,000        
Long-Term Debt, Total   $ 0     $ 0
Drawdowns as Loans [Member] | One-third Drawn [Member]          
Line of Credit Facility, Upfront Fee Percentage 0.25%        
Drawdowns as Loans [Member] | Two-thirds Drawn [Member]          
Line of Credit Facility, Upfront Fee Percentage 0.50%        
Drawdowns as Loans [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument, Basis Spread on Variable Rate 3.75%        
Letter of Credit [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 70,000   $ 92,500    
Line of Credit Facility, Upfront Fee Percentage 0.75%        
Letter of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument, Basis Spread on Variable Rate 3.00%        
Bonds and Guarantees [Member]          
Long-Term Debt, Total   $ 53,800     $ 33,400