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Note 14 - Commitments and Contingencies (Tables)
12 Months Ended
Sep. 30, 2025
Pipeline and Storage [Member]  
Notes Tables  
Contractual Obligation, Fiscal Year Maturity [Table Text Block]
  

Pipeline and

 

Year

 

Storage Capacity

 

2025 - 2026

 $21,214,051 

2026 - 2027

  19,808,347 

2027 - 2028

  16,077,977 

2028 - 2029

  13,930,198 

2029 - 2030

  9,276,138 

Thereafter

  57,469,500 

Total

 $137,776,211