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Note 4 - Long-Term Debt (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 20, 2024
Jul. 29, 2024
Jun. 30, 2024
Feb. 09, 2024
Jul. 24, 2023
Jul. 05, 2023
Jan. 20, 2023
Jul. 05, 2022
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Prime Rate [Member] Prime Rate [Member]                
Revolving Credit Facility [Member]                    
Line of Credit Facility, Maximum Borrowing Capacity                   $ 300,000,000
Line of Credit Facility, Secured Borrowing Base   $ 65,000,000 $ 115,000,000 $ 115,000,000 $ 85,000,000 $ 85,000,000 $ 65,000,000 $ 75,000,000 $ 60,000,000 $ 75,000,000
Long-Term Line of Credit $ 4,000,000 $ 0                
Debt Instrument, Prime Rate 7.50% 8.50%                
Debt Instrument, Interest Rate, Effective Percentage 9.75%                  
Line of Credit Facility, Remaining Borrowing Capacity $ 111,000,000                  
Revolving Credit Facility [Member] | Measurement Input, Utilization Rate [Member]                    
Debt Instrument, Measurement Input 0.0225                  
Revolving Credit Facility [Member] | Minimum [Member]                    
Debt Instrument, Basis Spread on Variable Rate   2.25%                
Debt Instrument, Interest Rate, Effective Percentage   10.75%                
Revolving Credit Facility [Member] | Maximum [Member]                    
Debt Instrument, Basis Spread on Variable Rate   3.25%                
Debt Instrument, Interest Rate, Effective Percentage   11.75%