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Note 5 - Bank Debt (Details Textual)
$ in Thousands
1 Months Ended 3 Months Ended
Apr. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Aug. 02, 2023
USD ($)
Jun. 30, 2023
Mar. 13, 2023
USD ($)
Mar. 12, 2023
USD ($)
Dec. 31, 2022
USD ($)
Long-Term Debt, Gross   $ 77,000 $ 91,500          
Debt Issuance Costs, Net, Total   $ 3,219 3,609          
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   Secured Overnight Financing Rate (SOFR) [Member]            
Term Loan [Member] | Revolving Credit Facility [Member] | Post March 2023 Amendment [Member]                
Long-Term Debt, Gross           $ 35,000    
Term Loan [Member] | Revolving Credit Facility [Member] | Post August 2023 Amendment [Member]                
Long-Term Debt, Gross   $ 58,500            
Credit Agreement [Member]                
Debt Instrument, Unused Borrowing Capacity, Amount   37,900            
Debt Instrument, Liquidity   39,500            
Letters of Credit Outstanding, Amount   18,600            
Debt Issuance Costs, Net, Total   $ 3,200 3,600 $ 4,300   1,600   $ 2,500
Leverage Ratio   2.25            
Debt Instrument, Covenant, Debt Service Coverage Ratio   1.58            
Debt Instrument, Basis Spread on Variable Rate   4.50%            
Debt Instrument, Interest Rate, Effective Percentage   10.00%            
Credit Agreement [Member] | Minimum [Member]                
Debt Instrument, Covenant, Debt Service Coverage Ratio         1.25      
Debt Instrument, Basis Spread on Variable Rate   4.00%            
Credit Agreement [Member] | Maximum [Member]                
Debt Instrument, Covenant, Debt Service Coverage Ratio   2.88            
Debt Instrument, Basis Spread on Variable Rate   5.00%            
Credit Agreement [Member] | Forecast [Member] | Term Loan [Member]                
Debt Instrument, Periodic Payment $ 6,500              
Credit Agreement [Member] | Revolving Credit Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity       75,000   $ 120,000 $ 85,000  
Debt Instrument, Covenant, Maximum Annual Capital Expenditures   $ 75,000 $ 1,500 100,000        
Debt Instrument, Amount to be Converted       $ 65,000        
Credit Agreement [Member] | Term Loan [Member]                
Line of Credit Facility, Maximum Borrowing Capacity   75,000            
Debt Instrument, Increase (Decrease), Net   14,500            
Proceeds from Issuance of Debt   $ 18,500