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Note 16 - Interest Bearing Loans (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2023
Oct. 06, 2023
Dec. 31, 2022
Long-Term Debt $ 20,000   $ 0
New Credit Facility [Member]      
Long-Term Debt $ 20,000    
Line of Credit Facility, Interest Rate at Period End 8.10%    
New Credit Facility [Member] | Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 250,000  
Line of Credit Facility, Ability to Increase Borrowing Capacity, Maximum Available   $ 350,000  
Debt Instrument, LIBOR Floor   0.00%  
Line of Credit Facility, Commitment Fee Percentage 35.00%    
Debt Instrument, Covenant, Minimum Interest Cover Ratio   4  
Debt Instrument, Covenant, Maximum Net Leverage Ratio   2.5  
New Credit Facility [Member] | Drawdowns as Loans [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 166,700  
Long-Term Debt     0
New Credit Facility [Member] | Drawdowns as Loans [Member] | One-third Drawn [Member]      
Line of Credit Facility, Upfront Fee Percentage   0.25%  
New Credit Facility [Member] | Drawdowns as Loans [Member] | Two-thirds Drawn [Member]      
Line of Credit Facility, Upfront Fee Percentage   0.50%  
New Credit Facility [Member] | Drawdowns as Loans [Member] | Secured Overnight Financing Rate (SOFR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 3.75%    
New Credit Facility [Member] | Letter of Credit [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 83,300  
Line of Credit Facility, Upfront Fee Percentage   0.40%  
New Credit Facility [Member] | Letter of Credit [Member] | Secured Overnight Financing Rate (SOFR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 2.50%    
New Credit Facility [Member] | Bonds and Guarantees [Member]      
Long-Term Debt $ 50,400   $ 53,800