v3.26.1
Note 6 - Financing Arrangements (Details Textual)
Dec. 16, 2025
USD ($)
Dec. 31, 2025
USD ($)
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]  
Revolving Credit Facility [Member] | BMO Bank N.A. [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 10,000,000  
Debt Instrument, Interest Rate, Effective Percentage 3.67%  
Debt Instrument, Basis Spread on Variable Rate 1.75%  
Long-Term Line of Credit   $ 0
Line of Credit Facility, Expiration Date Dec. 16, 2026  
Revolving Credit Facility [Member] | BMO Bank N.A. [Member] | Maximum [Member]    
Debt Instrument, Total Funded Debt Ratio 2.5  
Revolving Credit Facility [Member] | BMO Bank N.A. [Member] | Minimum [Member]    
Debt Instrument, Fixed Charge Coverage Ratio 1.2