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Note 4 - Long-Term Debt (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Aug. 14, 2025
Jun. 30, 2025
Dec. 20, 2024
Jul. 29, 2024
Jun. 30, 2024
Feb. 09, 2024
Jul. 24, 2023
Jul. 05, 2022
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Prime Rate [Member]                
Revolving Credit Facility [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity                 $ 300,000
Line of Credit Facility, Secured Borrowing Base       $ 115,000 $ 115,000 $ 85,000 $ 85,000 $ 65,000 $ 75,000
Long-Term Line of Credit $ 4,000 $ 0 $ 12,000            
Line of Credit Facility, Remaining Borrowing Capacity $ 111,000                
Debt Instrument, Prime Rate 7.50%   9.75%            
Debt Instrument, Interest Rate, Effective Percentage 9.75%                
Line of Credit Facility, Current Borrowing Capacity   $ 115,000 $ 103,000            
Revolving Credit Facility [Member] | Measurement Input, Utilization Rate [Member]                  
Debt Instrument, Measurement Input 0.0225